Interesting that Suno et al miss out on the obvious problem that actual musicians need extra musicians for their own projects.

For instance a guitarist will have a track they wish they had vocals for(and lyrics) for and if they could pay for that they would.

Literally if you could highlight a tune section in your DAW, prompt it, and vocals + lyrics were generated, possibly different version or harmonies for existing parts etc. Musicians already pay for plugins but the singing ones are awful to use so far.