This is just anecdotal but I see a lot of very niche creative people making money that they wouldn't have made before through YouTube, Discord, Patreon, Gumroad etc.
I think the opposite is true, while in the past it was maybe PayPal there's a lot of ways to make money online that's very approachable for everyone.
Whatever the form, content by itself just doesn't pay a lot for most and never has. I just finished a new edition of a book of mine. It's valuable for "branding" (ugh term I know). But I'll directly make less money than from cranking out a blog post for some company.
The former is still very much booming, and I don't see why the latter would go anywhere.
In the flesh live, people together experiencing something collectively.
"I don't see why the latter would go anywhere"
There's an ongoing pandemic and during it the vast majority of venues where people can experience performance or sport collectively are and remain closed. During this time the income normally generated has understandably ceased. Many places may remain permanently closed, including historical outdoor events.
I do eventually expect a move toward normality but it's going to take many years. In the meantime we can add online live & reminiscing in lieu of the 'real thing'.
There are a bunch of reputational benefits to certain types of book writing which (probably) lead to significant career/comp benefits. But the direct money can be less than what companies will pay for a ghostwritten content marketing-type blog. Or even whatever a lot of salaried people earn for doing that sort of work on company time. There's a reason a lot of "creatives" end up working for corporate product companies as their day job.