Musicians can already monetize their work through a myriad methods. There's a ton of independent labels, larger labels, Bandcamp and Bandcamp-like websites for purchasing music, managers who can help you get gigs and promote yourself, etc.
The problem is not, and has never been, that the big bad labels are taking all the money.
The problem is that it's just not fundamentally profitable to have a sustained business as a musician at the price point most people are willing to pay for content and products made for fan consumption.
You can't really automate promotion; it's an extremely human-intensive task, and managers/promoters cost money. Venues have an upper bound on how much money you can make because owning a venue is already a money-losing proposition. Merch? The vast majority of music fans are young and don't have much disposable income, with the exception of some very large acts where fans continue to spend money on concerts and albums into middle age and beyond.
Music just isn't profitable because for the vast majority of people it's a labor of love, where monetary incentives just don't play the way they do in other industries, and where the most enthusiastic fans don't have much money to spend and have a thousand other alternatives.
There is not a single proposition in the NFT space that alters any of these mechanics. If you're not willing to spend two bucks to buy a track on Bandcamp you sure as hell aren't gonna do so with an NFT.