- Pay in advance, before the product exists.
- Pay for early access that other people don't have. (Yes, in the absence of copyright, people could take the early-access version and share it with others. People already do this today, and that doesn't stop folks from continuing to be patrons anyway.)
- Accept that the 0.0..01% case of absurdly popular works will end up making less money than they otherwise might have. Small price to pay for having a rich and vibrant ecosystem of people sharing things and modifying things.
For books and music maybe the difference is not quite that big, but for games and movies these 0.0..01% cost so much more to make that they would definitely not get made if they made significantly less money.
People should be paid for the labor of creating, not for artificially scarce copies of the finished product.
Patronage has been known as an alternative to copyright since around 200 years ago:
https://www.thepublicdomain.org/2014/07/24/macaulay-on-copyr...
The cited drawbacks are valid: creators are beholden to the elites who fund their work, and their influence in their creative process is felt to this day.
With modern technology, however, funding is diffused through large groups of people which minimizes this impact through diversification.
The ideal model is one where lots of people pitch in to fund a creator for the full cost of creating something, then the resulting work is released directly to the public domain.