Copyright should be commoditized. A possible first step could be giving copyright owners a single obligation: you have to sell what you own. That thing you have must be available on the market.

This rules out negotiations. They imply a possible negative result, hence the thing is not really available. A public offer, however, is fine.

This thing alone may change the situation quite a bit. Imagine a true market for textbooks or streaming media where every provider has the same selection of titles and has to actually compete.

What happens if I wrote a book - sent around to a few publishers and then personally had a change of heart - perhap it has content which I now disavow.

Shouldn't it be within my right to withhold publication?

Or because I refuse to publish, but the publishers have a copy - I should lose the right to control my own work and the copyright falls and the publisher can just publish freely?

But what does “available on the market” mean? Let’s say I own the copyright to something of cultural significance. I make it “available on the market” but at a very high price. Or are you saying that the price would be enforced?