Can I respectfully offer my opinion.
I think the guitar is a rather unfashionable instrument at the moment, although lockdown might have given it a boost with the apparent rise in people learning to play the guitar over rescent months. Lack of rehersal spaces, the rise in computer tech and solo artists having control over their work seems to be the order of the day.
The lack of vision by record companies. I mentioned on another thread, could you imagine record companies allowing The Beatles to not tour at the peak of their powers. Zep would have far more battles regarding their music