It is not that simple. There are artists for example who are disabled and it is difficult to do concerts, but I agree with you. Just wanted to point that out as some people think of artists as dancing monkeys and not humans like everyone else.
That's not the case. Dead artists do concerts. Artists that never physically existed do concerts. You could have a Steven Hawking concert now and people would pay for the tickets if music was good.
Also could you give examples of popular disabled artists that can’t perform on stage?
Because I don’t think I or anyone I know could list a single example.
Maybe they weren't 'disabled' but they had their reasons for not wanting to tour.
Also, this argument discounts second order effects. Who knows what new innovations might be brought on by the need to find an alternate revenue source.
Economies change. Everybody has to adapt and do work that people will pay for. In music, increasingly, that means performing live.
There might be other options too. Crowdfunding new albums, maybe. Merchandising. The more we accept the new reality, the more we'll figure out.
All your examples are the top of the top - most artists can't afford to not tour.