In an era of competing NFT marketplaces, NFT royalties have fallen by the wayside.
Optional royalties were first popularized by Magic Eden, a dominant Solana NFT marketplace, after upstarts like Hadeswap quickly began capturing market share by employing zero-royalty models. Popular marketplaces LooksRare and Blur soon followed suit by making royalties an opt-in functionality for holders, with Blur enforcing royalties for creators only if other marketplaces (i.e., OpenSea) were blocked.