NFTs and Copyright takedowns (DMCA)

I wonder what people’s thoughts are about someone uploading an NFT from your platform, with the base being Copyright material?

Do you just stop showing that NFT on your own platform - and let other platforms do whatever they want?

Can the image pointed to by the IPFS record be modified somehow?

I assume the NFT contract itself could have a property added to it to say that it has been DMCA’ed and invalidated.

But that might happen after someone has already bought it from the original creator…