The only tangible different is that once you've establish the meatspace laws, the ownership can be transferred on chain and still hold a valid claim, instead of having to result in meatspace in order to transfer it.

If you want to transfer ownership (copyright) within the traditional legal framework, you’ll also loose your say in what happens next, so you can’t guarantee that a subsequent change in NFT ownership automatically means a change in ownership of the rights.

What you could do is retain the copyright yourself, but accord an open-ended copyright license (like the way oss licenses are written) that accords certain rights to the owner of the NFT (and have the license describe how to determine who is the owner of the NFT).

This is the value of blockchain in a nutshell. Programmable trust. All manner of tokens (represented things - both digital and not), can be moved, modified, leveraged, etc. It is a public ledger and api for trust. Probably people still under-appreciate the utility, liquidity, and overall productivity boon this will be.