Ryan Reynolds is the kingmaker. Remington Group knows this and likely have given him some nice equity/goodies in their partnership.
The NHL Board of Governors will do as Bettman says, as they have done for the last 30 years. Bettman will sell them on the influencer/media value of Reynolds, which will look especially valuable in the face of Bally Sports busting.
Nice theory, but it's the other way around. Bettman finds out what the Board wants, and then promotes & advances those objectives.
The NHL has a constitution and a Board of Governors. The constitution dictates how decisions are made. In Article 2.1.b. of the Constitution it states the purpose of the Constitution and League is "The promotion of the common interests of members of the League, each member being an owner of a professional hockey club".
Bettman serves at the pleasure of the Board. He can be fired by the Board, and the Board can appoint another Commissioner which of course is laid out in the Constitution as well. This is the way all corporations are run as well, not just the NHL.
The Board can decide to reject a an offer from a prospective owner to purchase a NHL club. This happened with Balsillie's attempt to purchase the Phoenix Coyotes. "The criteria set forth in the [NHL] constitution and bylaws relates to financial wherewithal, character, integrity and the view whether or not the other owners would deem you a good partner," Bettman said. When asked why Reinsdorf's group's application was approved, Bettman said, "
That's a question better directed to the governors because they're the ones who vote."
In the sale of the Penguins to FSG (Fenway), the Penguins owner had already reached an agreement for the sale of the Penguins to Fenway and 2 weeks later the Board approved the agreement that had been reached and the sale: "The approval from the Board of Governors comes less than two weeks after the Penguins reached an agreement for Fenway Sports Group to acquire controlling interest in the team.".
Bettman isn't a pied piper telling a hapless bunch of successful, powerful, uber-wealthy billionaires what to do. For those that have experience in corporate governance, the NHL constitution and the way it is run is very similar to corporations and the idea that Bettman is a king or autocrat that tells owners/Board of Governors what to do even if its against their wishes is pretty far fetched. Bettman's success no doubt is that he understands what his BoG wants and has helped orchestrate that in the past. Bettman wouldn't be where he is today if he didn't do this and was going against the wishes of the BoG.