How would Bob Ross NFTs have similar value if he hadn’t become famous through traditional media channels? NFTs appear to provide some technical solutions, but

How would Bob Ross NFTs have similar value if he hadn’t become famous through traditional media channels? NFTs appear to provide some technical solutions, but AFAICT they don’t solve the general problem of becoming a well known artist whose work draws a high value. Seems the artists benefitting from NFTs are already well known, and an existing contract would probably put their proceeds at risk in court (eventually)