It wouldn't. If a music studio needs to wait 4 years to not have to pay any royalties at all, then the song would be recorded (copyright created) and the music groups would just wait 4 years and then start playing it on radio stations.
It needs to be something like 12 + 12 or 20 + 20, or even 20 + infinitely continuable for a gradually increasing cost. It still has the potential issue of waiting out that 24 to 40 years; but companies are less likely to do that, when a few years is basically nothing.
It's been 2 years since covid started, for example.
Companies will go bankrupt. Their business models will break down. Yes. That's intended. There's no need for these middlemen in the age of the internet.
IMO if you want to end the commercialization of content, targeting copyright is not the most effective route. Big players will still be able to use their power to ensure that they have control over distribution, and will continue to profit off of content. Small players, such as the people coming up with new content, will find it harder and harder to make any money, to the benefit of the big players who no longer need to share profits with them.
The more effective approach would be to simply remove the economy entirely. In a post-scarcity or communist or whatever you want to call it society, you could abolish copyright entirely without hurting anyone, because no one's able to profit off it in the first place and spending effort on things that don't pay off is no longer penalized.
It needs to be something like 12 + 12 or 20 + 20, or even 20 + infinitely continuable for a gradually increasing cost. It still has the potential issue of waiting out that 24 to 40 years; but companies are less likely to do that, when a few years is basically nothing.
It's been 2 years since covid started, for example.