As skeptical as it sounds to cancel Trump bets, I don't that has any has any factor of closing shop to the US. What is interesting about 5D shutting down to US players is that they're trying to go the DraftKings/FanDuel route and going legal in the US. This may not be a bad thing in the long term.
Don't be surprised if you hear from them soon trying to open up shop in the US. This reality is closer than you think..