Your argument presupposes that without a patent no one would invent anything. I’d be interested in seeing a proof of that.
There are counter examples. For instance, the fashion industry has no patents or copyrights. There are trademarks, but I can copy your design exactly as long as I don’t put your name on it.
The fact is that the growth of bio-tech and similar industries has occurred in countries which protected intellectual property. It coulda all been a coincidence.