>We, as humans, have missed out on a lot of art because of the invention of the camera.

I so severely doubt this to the point I'd say this statement is false.

As we go toward the past art was expensive and rare. Better quality landscape/portraits were exceptionally rare and really only commissioned by those with money, which again was a smaller portion of the population in the time before cameras. It's likely there are more high quality paintings now per capita than there were ever in the past, and the issue is not production, but exposure to the high quality ones. Maybe this is what you mean by 'miss out'?

In addition the general increase in wealth coupled with the cost of art supplies dropping this opens up a massive room for lower quality art to fill the gap. In the past canvas was typically more expensive so sucky pictures would get painted over.