I think royalties should be collected, after all, compared to directly selling NFTs, earning through royalties can also demonstrate that the project team has a good grasp of operations and traffic. But how to collect them and how much to collect is not so easy to determine. On the implementation level, it's still quite difficult; creators can't restrict users from freely sending NFTs. Currently, the transaction fee in the market is fixed, but royalties can be optional, which isn't very fair to creators.