That would prolly happen somewhere along the line, but you can be sure that many users hardly worry about stuffs such as their security, true decentralization, etc, until they become victims to such, it is what it is. USDT is centralized, that denotes that absolutely anything is possible, especially for users who have decided to hold it for the long term, decisions can be taken at any time by companies that run this projects, i am talking decisions that wouldn't be in your favor, your funds can also be frozen, etc, it is a no for me to hold USDT, but of course users are absolutely free to make up their own mind on what they want to do, and of course, the consequences remains theirs to take/bear.