Also, patents expire after only 21 years. They have patented this molecule now, but they haven't actually got a treatment as yet, meaning that the clock is ticking.
I don't know if you can copyright a molecule?
https://www.sciencedaily.com/releases/2016/02/160208124237.h...
"There is no patent. Could you patent the sun?"
While there is a decent argument to make here, this isn't it. Obviously a lack of IP protection makes it easier to copy what already exists ("catching up"). The question is whether it makes it easier to develop what doesn't exist yet.
That's why.
We didn't have labor and environmental arbitrage like we do now. One could email IP to someone in China who can mass produce it, with lower quality, lower costs, higher environmental impact and ship it across the Pacific a month later.
300 years ago, if someone stole your windmill design and took it to china, you'd never know.
Anyone else immediately thought: "OK, but they patented it, and the spin off company will presumably licence the tech for exorbitant sums, should it ever reach that phase of course, so it'll just be another expensive 1st world thing. No money? Bite the dust."?
And yeah, I know, patents encourage inventions and promote discoveries, we're all the better for their existence, they are literally the best thing since, well, invention of sliced bread.
[0] https://en.wikipedia.org/wiki/Penicillin#Mass_production