"Taking the treasury, or a fair portion of it, out of the hands of the rulers". That's the part they will be most pissed off about, but, even governments, have to compete for wealthy citizens to remain in their countries so they will have to embrace crypto sooner or later. The more they wait, the more irrelevant they will be in the future.
Please do make a post about it! I'd love to read about and see the discussions on the comments.