It's high stakes for UK companies as sports wagering starts to spread out in America.
From Tuesday, brand-new rules on wagering entered result in Delaware, a tiny east coast state about two hours from Washington.
Neighbouring New Jersey could begin accepting sports bets as early as Friday.
The changes are the very first in what could end up being a wave of legalisation after the Supreme Court last month cleared the method for states to permit sports wagering.
The industry sees a "when in a generation" opportunity to establish a new market in sports-mad America, stated Dublin-based monetary expert David Jennings, who heads leisure research study at Davy.
For UK firms, which are grappling with debt consolidation, increased online competition and tougher rules from UK regulators, the timing is particularly appropriate.
Why the gambling industry deals with an unpredictable future
How does prohibited sports wagering work and what are the worries?
But the market states depending on the US stays a dangerous bet, as UK business deal with complex state-by-state policy and competitors from entrenched regional interests.
"It's something that we're actually focusing on, however similarly we don't want to overhype it," stated James Midmer, spokesperson at Paddy Power Betfair, which recently bought the US dream sports betting website FanDuel.
'Take some time'
The US accounted for about 23% of the world's $244bn (₤ 182bn) in video gaming earnings in 2015, according to a report by Technavio, external released in January.
Firms are wanting to tap into more of that activity after last month's choice, which overruled a 1992 federal law that disallowed states outside of Nevada and a few others from authorising sports wagering.
The judgment found the law was an over-reach of federal power. But the court it did not in fact legalise sports wagering, leaving that concern to local legislators.
That is anticipated to result in substantial variation in how companies get certified, where sports betting can occur, and which events are open to speculation - with big ramifications for the size of the marketplace.
Potential income ranges from $4.2 bn to almost $20bn every year depending on factors like how lots of states relocate to legalise, Oxford Economics estimated in a 2017 study for the American Gaming Association.
"There was a great deal of 'this is going to be big'", stated Will Hawkley, London-based head of leisure for consultants KPMG.
Now, he stated: "I believe most people ... are taking a look at this as, 'it's a chance however it's not going to be $20bn and it's going to be state by state and it's going to take some time'."
'Remains to be seen"
Chris Grove, managing director at Eilers & Krejcik Gaming, forecasts that 32 states will legalise sports betting in some type by 2023, producing a market with about $6bn in annual earnings.
But bookmakers deal with a far different landscape in America than they perform in the UK, where betting stores are a regular sight.
US laws restricted betting largely to Native American lands and Nevada's Las Vegas strip till reasonably recently.
In the popular creativity, sports wagering has actually long been connected to a 1919 baseball World Series match-fixing scandal.
States have likewise been sluggish to legalise numerous types of online betting, despite a 2011 Justice Department viewpoint that appeared to get rid of obstacles.
While sports betting is generally viewed in its own classification, "it clearly stays to be seen whether it gets the type of momentum individuals think it will," said Keith Miller, law teacher at Drake University and co-author of a book about sports betting regulation.
David Carruthers is the former primary executive of BetonSports, who was apprehended in the US in 2006 for running an offshore online sportsbook and served jail time.
Now an expert, he states UK firms should approach the market thoroughly, selecting partners with caution and avoiding bad moves that could cause regulator backlash.
"This is a chance for the American sports wagerer ... I'm uncertain whether it is an opportunity for organization," he says. "It actually is reliant on the outcome of [state] legislation and how business operators pursue the chance."
'It will be partnerships'
As legalisation begins, sports betting companies are lobbying to fend off high tax rates, in addition to demands by US sports leagues, which wish to gather a percentage of earnings as an "integrity cost".
International business deal with the included challenge of an effective existing gaming industry, with gambling establishment operators, state-run lottery games and Native American people that are looking for to protect their turf.
Analysts say UK companies will need to strike partnerships, providing their knowledge and innovation in order to make inroads.
They indicate SBTech's recent statement that it is providing innovation for Kentucky Derby operator Churchill Downs as an example of the kind of deals most likely to materialise.
"It will be a win-win for everyone, but it will be partnerships and it will be driven by technology," Mr Hawkley said.
'It will simply depend'
Joe Asher, primary executive at William Hill US, is clear-eyed about the realities.
The business has actually been purchasing the US market because 2011, when it acquired 3 US firms to establish a presence in Nevada.
William Hill now employs about 450 people in the US and has actually revealed collaborations with gambling establishments in Iowa and New Jersey.
It works as danger supervisor for the Delaware Lottery and has actually invested millions along with a regional designer in a New Jersey horse racing track.
Mr Asher stated William Hill has actually ended up being a household name in Nevada however that's not necessarily the goal all over.
"We definitely plan to have a really substantial brand presence in New Jersey," he stated. "In other states, it will simply depend upon regulation and possibly who our local partner is."
"The US is going to be the most significant sports betting market worldwide," he included. "Obviously that's not going to take place on the first day."