Earlier quoted context omitted.
Royalties are built into marketplace smart contracts. Individuals can do P2P trades where the artist doesn't receive any royalty but this doesn't happen very often. Anecdotally, it typically only happens on large deals and people who do a P2P trade often send the artist their royalty anyway (but still benefit from not paying the OpenSea fees for example) Not sure what you mean by the second question
Wait, so the purported royalty benefit of wrapping this in a contract can be circumvented, but the NFT tech is still good because people who circumvent this kindly send the artist the royalty anyway? Would they not be able to send the same courtesy royalty if no NFTs were involved?
I think I felt compelled to mention that people send it anyway because it's good behavior and not all scams/crimes people say it is. In general I think the royalty thing is just one nice bonus of using smart contracts