this is not possible because uniswap is already created to be a decentralized type of exchange  and i havent seen an decentralized exchange that turned into a centralized or a centralized exchange that turned into a decentralized but its possible that it can be bought and controlled by more influencial and powerful people because i have seen that on the past  . i dont know if that could bring positive effects because i feel that it can also bring a bad effects because it shows that those powerful people are trying to conquer slowly everything on this space  .