Did you ever publish anything? First year or two it is mostlu pushing marketing/pr, and the long tail of trickle of money is where the true earnings lie. Also, for many works of art it takes more than 2 years to produce a next piece, and even if it was less, it’s not sure if it will actually sell.

Anything below 5-10 years and you have literal starving authors. Anything less than 5 and you may as well abolish it altogether.

we have literal "starving authors" - they pretty much all need second jobs to survive.

for the authors themselves I don't see much difference between having no copyright at all and being thrown a few pennies on their work from amazon.

whereas the future jk rowlings of the world will still buy lottery tickets to fame and fortune whether or not she is worth $20 million or $1 billion.