Remember the USA didn't set up it's GA flying and training industry to attract foreign students. They choose to come even the likes of BA, Sabena and Lufthansa.
Why because the governments of europe continue to abuse and neglect GA flying with high taxation and unreasonable user charges.
Private flying in a country the size of the USA is almost a necessity to get around from more remote areas. That's why it does not get abused in the USA. Hence a more liberal and open policy on taxation, noise abatement and user fees. When europe decides flying is not a luxury(never) and a necessity like in the US the systems may become more balanced.
Regards
FYF