For example, some artists on Ethereum are deploying their own token contracts[1], without the need for a distribution platform like Hicetnunc, SuperRare, etc. Once minted, these tokens can be traded on a secondary marketplace such as OpenSea (which may not have taken part in the initial distribution). If those secondary markets fail, the source of truth still lies in the blockchain, and the tokens can still be traded via any new marketplaces that emerge, or via smart contract queries through blockchain explorers like Etherscan, or even via one's own command-line (the web merely acts as a thin interface over these distributed endpoints).
I do agree that artists on Tezos are becoming too centralized to Hicetnunc (compared to, say, NFTs on Ethereum, which tend to be very diverse), but I believe this to be a solvable problem[2].
[1] - https://www.deafbeef.com/
[2] - https://twitter.com/mattdesl/status/1412713480893960195