I would flag that we’re getting into “prove a negative” territory here: the goalpost is that we need to prove empirically that patents achieve the desired outcome. If the scenario you describe accounts for all game-theory/incentive/complex-adaptive-system universes, we should see this reflected in the data.
When it comes to pharmaceuticals, they looked into Italy and Switzerland who switched to a patent system in 1978 (and I believe Portugal in the 1990s). They looked at the growth curves of things like # of inventions, total factor productivity, percentage R&D spending, and the conclusion was that there was no statistically significant change in trajectory that would suggest the introduction of the patents had any positive effects. (Edit: they accounted for domestic/international + US filings before/after as well).
I think it's important to note that the cost of bringing a drug to market has increased a lot (about threefold) since 1990, so if the case studies are that old they might not generalize.
The you being taxpayers, right?
To make a shit ton of money. These things are insanely profitable. Generics exist and they're still profitable. You can get 99% of drugs from over seas and they're still profitable. These companies make trillions of dollars over the years. Yes, they might make slightly less money, but they still would be making a shit ton of money.
Not sure how that address the point. Again, the investment to get a drug to market is gigantic and you're saying that someone should pay for that and someone else should get the reward. It really doesn't work that way. Everyone would want to be the one who didn't pay.
If the current iteration of pharma companies refuse to share society progress with all humans, we can create different pharma companies that build drugs for the public good rather than the private benefit.
But here's a mechanism to mobilize private capital for those diseases that are. Again, the investment needed boogles the mind, around 10B currently, for a single drug.
You're asking someone to pay that money and allowing others to reap the rewards. Why wouldn't everyone want to be the one who didn't pay the money?
Even with the current system everything older than X years is public. That means we should have better care options available then anything X years ago. And that keeps increasing.
Capital continued to exist and there continued to be people who decided what got built and who received them. To me, that's private ownership. I mean, it's not like apple trees suddenly began bearing Ladas. If I wanted to acquire a field to occupy / farm, it was presumably controlled by someone, either an individual person or group of people. I don't see the difference in saying that in one situation my neighbor owns the field as personal real estate, versus whatever terminology the soviets used for why I can't just take it.
Also, the bulk of the cost of manufacturing a drug lives in the scientific & engineering exploration space, which we should incentivize.