Pinnacle went from the world's top sportsbook to a complete has been sportsbook the moment they stopped taking bets from US customers. It was a totally moronic decision on their part. They should have told the US government to go fuck themselves.
Pinnacle lost anywhere from 2/3 to 3/4 of their customers. The big problem there is they had little to no chance to make that up with any new customers because anyone who was betting any kind of money offshore already had an account there. Frankly, I'm amazed they're still in business.