This is not a property of NFTs, but rather of new, unproven technologies. If NFTs "make it big", there will be plenty of middlemen that spring up to "help" artists sell NFTs while owning the IP rights and collecting royalties.
Sure there will be middlemen trying to profit due to asymmetry of information / technical knowledge. But as technology marches along the barriers to entry of launching new things trends to zero. Smart creators are increasingly harnessing new technologies to cut out existing middlemen. Podcasts are a great example of this, anyone with a microphone can start an entertainment business now and collect money from direct relationships with advertisers.
I think the big news in Podcasts is centralization. Many new podcasts get their money either from "networks" or by being part of one of the podcast walled gardens (e.g. Spotify). I suspect traditional podcasts will go the way of blogs soon and be largely superseded by several competing commercial platforms (think Medium). See, for example, the moves by Apple to turn their Podcasts app into a subscription platform: https://www.apple.com/newsroom/2021/04/apple-leads-the-next-...
And yet plenty of middlemen exist for podcasts, too - Earwolf, Stitcher, yadda yadda. Sure, barriers to entry trend toward zero, but that doesn't mean everyone's going to see what you're selling. Many people will need to partner with someone who can help get their shit in front of people who want it, and those partners are going to want a cut.
Record labels, Instagrams and Etsys will show up to the NFT party in spades.
