Barca, Bayern, Real Madrid and PSG are desired clubs beyond wages because they are almost certain to win trophies, and also because the weather is a lot better (especially for Barca/Madrid). The one problem with having such an epic league in England is that players look at the clubs with a lot more uncertainty than they do elsewhere. Once you're earning a certain amount, you might give up say £20,000 a week more if it means you can live in a vibrant, sunny city.
There's also the consideration that some players may genuinely just not see themselves as "Premier League style" players.