MLS: Growth in NA.

[Vancity]

So, I was wondering and been thinking about MLS, and the growth of the sport. There's no doubt that soccer - professional soccer - in the US, and in Canada, over the last few years has grown, due to MLS.

But I wonder, with all the other leagues around the world (i.e. EPL, Serie A, even the Chinese Super League), is MLS ever going to be able to keep it's best young players from seeing MLS as a starting point, and moving onto the best (or better) leagues globally?

I was reading an article in Vancouversun, about Salgado, recovering from his foot injury. The article also mentioned that Salgado wants to focus on MLS now, but hopes to play in Europe soon.

How is the quality of play on the pitch ever going to improve, if the league continues to lose it's best young talented players - going elsewhere?

Thoughts?