Oh 100% hockey has a much higher barrier to entry because of cost. But you've also gotta look at the relatively untapped market in the US. If some of these athleticly gifted freaks that dominate the NFL and NBA start playing hockey instead, they'd have a huge talent pool. That's why Bettman is trying to grow the game in the south.
That 5'10 Tommy Try-Hard you see playing ball in any local gym topped out at high school because of his size. But with his natural athletic talent and work ethic, he could've gone a lot further in hockey if he started playing as a kid
The thing is, it's so expensive to start as a kid, and play at a high level that it dramatically reduces the field of high-level talent. Like, the barrier to entry are just so much. Yes, occasionally a very talented kid starts in houseleague and is talented enough that a AAA team carries them through sponsors (I've heard this about some current NHLers), but even then, they need to be able to afford putting them in house league at like 6 or 7.
Hockey in the United States while untapped is still very expensive. I have a friend who had his kid in Hockey in Montreal, and then moved to Los Angeles. I would consider them upper-middle class. Travel hockey in Southern Califronia is not cheap, and they didn't pursue it because of the combination of cost and time commitment. GTHL hockey is insanely expensive, and the amount of time you spend driving around in the hellscape known as 400 series highways is beyond frustrating, but outside rare tournaments you still aren't leaving the city often. Top AAA programs outside places like Minnesota, Detroit and New England, the teams are constantly travelling long distances to play tournaments or even their competition.
Hell, since this is a thread about Arizona, look at Matthews. He even stopped playing travel one year just to focus on skill development because of the costs associated. The distance his AAA team travelled to play high-level teams in a season was insane. And, we are talking about one of the most talented American players of all-time, and probably the most talented from a non-traditional market.