Because they are in many of those divisions that aren't profitable to most gyms in the US. So far the US teams got by with difficulty in the international/open divisions by putting together a team mid-season that had a lot of skills. I guess the US gyms have to start realizing that this doesn't fly anymore and that the non-US teams are catching up very quickly. Add to that that some of these divisions aren't seen as "prestigious" in the US as the senior (and some of the non-senior) divisions. And if you don't put in 100% of the effort, you don't get 100% of the results.