Money talks: Who pays for the training should not matter. If the training is necessary for the qualification then it gets paid by necessity.
FAA begins to require all new airline pilots at least 1500 flight hours before they are allowed to fly an airliner. That is a lot, requirement used to be 250 hours.
Meanwhile in Europe... ICAO Multi-Crew Pilot Licence is implemented here. That means new pilots need to have at least 240 hours flight time, and as far as I understand, approximately two thirds of that can be flown in flight simulator.
What does that mean? That means the airlines want to get pilots with as cheap training as possible, and European Union has listened to them and accepted this.
USA was the first continent to face the changing world of the airline business, towards low-cost operations and low-cost pilots. This new 1500 hour minimun requirement is a large step back, now it is almost impossible to begin your career as airline pilot in USA, and you won't have the cheapest pilots there anymore.
But we get cheaper and cheaper pilots here in the other world. So you can say whatever you want about necessity of expensive training, but money talks. Airlines lease their pilots via contract agents that work in countries with laws and taxes that are cheapest and easiest for the airlines. The most important thing in recruiting is that the work force is cheap.
The reputation of Asian airlines is such that they need to pay more than the others for Western pilots. Western pilots are not loved members of the work force in Asian carriers, I believe, and both Asian pilots and management of the companies want to get their own people flying their planes as soon as possible.
Maybe you should close the borders and not accept non-American airlines to fly there at all? You can recruit the best pilots from other world after they have flown their first 1500 hours somewhere else. But be careful, we pilots in the other world are going to be worse and worse, you should really think twice before accepting us to fly in your airspace.