NFTs can be anything, so the potential future use cases may be extremely diverse, but let's limit ourselves to the current main narrative, which is art.

Optimistically, NFTs give artists and photographers a new channel to sell their work without being constrained too much by middle men. As an example, photographers often try to monetize using stock agencies, whom fully dictate terms and give them pennies, whilst keeping most of the resell value themselves.

As such, NFTs offer less gatekeepers, less or no cut on revenue, as well as new technical possibilities. The artist has far more control, and thus economic freedom. At least potentially.

As to whether this actually leads to artists more successfully monetizing is another question entirely. Too soon to tell.