Different situation. Brick layers are getting their full salary when they work. Content creators don't have a salary, but a recurring revenue from sales.
Plenty of content creators have one time pay: session musicians, contract programmers. Copyright then gets transferred to those milking the cow.
Plenty of content creators are salaried employees as well.
Oh god this just gave me the dystopian vision of companies offering streets as a service, where you pay for every cobblestone as you drive over it.
After all they are still alive and kicking and people are still walking on those streets many years later.
We 'knowledge workers' have it pretty easy compared to the people doing physical work. 30 years should be plenty for all media.