Think this is actually a good observation to think through risks but unlikely imo. For that, agents would need physical resources and determine that a controlled bitcoin - which would then likely fail…..is better for them. Zero sum thinking from a zero sum game. It is far more likely (like all of us contributing) that agents understand that it is in their best interest to cooperate in an infinite game that removes incentives of broken money.
The more real risk (not for bitcoin but for some in bitcoin today) is through social attack engineering a risk to change adapt the protocol that then introduces a fork that has some people on wrong side of it (US $ coin, quantum resistant coin, it’s a database instead of money coin)