The white paper of a dApp usually answers the question on the limits and boundaries an asset holder has as the 'owner'. Some smart contracts do have description/definition of what the participant is purchasing but sometimes it is up in the air.
You brought up some interesting thoughts about what 'owning' an NFT actually means. In some cases it is just for purposes of resale while in others it could be actually using the owned NFT and using it as a personal brand. It'll be interesting to see what happens in the future as this technology progresses and the definition becomes clear.
Thank you for sharing!