Earlier quoted context omitted.
In an ideal world, copyright should last for maybe two or three years. It would still mostly fulfill its purpose to allow the creator to earn money, but would severely curtail the abuse potential. In an even more ideal world, copyright shouldn't be transferable.
It is complicated. For very popular artists yes, their music is commercially short-lived and most of the returns will come in the first six months. But for the more obscure composers and performers the reality is completely different.
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.