For sure a possibility, but I don’t think that would lead to control or true censorship of the network. It would definitely impact specific nations perhaps, as in localized censorship (ex: US based miners blacklist transactions from unknown entities), but the network being decentralized and having multiple options means the free market to move where it is the free-eat (elsewhere would opt for the idealogical approach, in some cases as an intentional counter to the authoritarian party).