Innovation and progress happened at a snail’s pace (by modern standards) before IP rights (at least rudimentary) became a thing. Not saying there was a causal relationship necessarily but if we look at some of the most important inventions like the steam engine it’s unlikely that it could have been invented and perfected at the time it was without patents.

It’s rather [extremely] simple and obvious , generally R&D requires significant investment. If you can’t get any return on your investment, you won’t invest.

Of course there needs to be a balance to minimize rent seeking beyond a certain point.