Can't see a fold or leaving US, but they are the only CR book that could even consider dumping US, CRIS and 5D both offer enough to have some non-US customers, the others in CR... No way they exist for long without their US clients.
Remember Bodog , WSEX,and Greek are not in CR.
Who are the big CR books after CRIS, Sportsbook.com, and 5D ?
I'm thinking Wagerweb,Cascade, Skybook, probably forgetting somebody large.
After that you get into lots of small operators that absolutely need US clients.
After