There's much sense in this post.
You are right that the US, though not short of instructors, does not have the infrastructure for development that Europe enjoys. We have nothing to match the Euro-tour or the German Bundesliga, important training grounds for the top European cueists. When Predator rolled the dice on an all-US 10ball tour in 2022, called the US Pro Billiard Series, the top American cueists rarely showed up and, predictably, the tour folded by 2023.
This year, Predator began a new international Pro Billiard Series, with four stops in the US (Las Vegas, St Louis, San Antonio and Jacksonville) and overseas events in Austria, Vietnam, and Bali. Unlike the events of the US Pro Billiard series of 2022, however, these fields are super-elite, and the second-tier pros (let's call that Fargo 720-750) have little chance to make money. The developing pros lost a very key training ground.
The one positive for the emerging American pro is the continued emergence of WNT satellite events, which have already taken place in Pennsylvania, Orlando, Jacksonville, Seattle, Connecticut, North Carolina, Virginia and Arizona. Add these events to the majors, and an emerging American pro now has the opportunity to play in a lot of WNT events without leaving the US.
I think the Philippines is a different matter. First of all, there are about a zillion places to play pool there. Second, the income available from pool for many exceeds anything they could make in a steady job. I recall noting when Biado won the US Open 9ball (and $50,000) that he had won about 17 times the average annual Gross Domestic Product per person of his home country, and that for an American to do the same, they would have had to win a $1,000,000 first prize.
Still, and I've posted this umpteen times over the years, the inappropriate culture in far too many of the poolrooms of America is part of why the youthful cueists are rarely found there, which in turn hinders the development of young cueists. It is easy to say that getting cue sports into the schools is the only real solution, but to me, unless the poolrooms of America are going to be the kind of places into which parents are sufficiently comfortable sending their kids, it will not be enough.