Music is bad area to be dealing with economic arguments because copyright is such a murky topic, but by way of counter-example - John Fogerty cut back his produ

Music is bad area to be dealing with economic arguments because copyright is such a murky topic, but by way of counter-example - John Fogerty cut back his productivity due to disagreements with a recording company. Further, the fact that there are incentives other than money doesn't affect the point that money is a factor. You need to consider the examples that an era didn't produce, not just the ones that it did.