Again, that
might be true, but it rings multiple alarm bells when I actually think about it.
First, it assumes that the profit margins of a company remain constant. Again, companies want to make money. Period. So say that you're a pharmaceutical company and you're currently getting back 250% of your costs for a drug over the exclusivity period.
If we double that exclusivity period, you are not going to decrease the price you charge or the amount you invest into marketing so that your return on investment remains 250%. At least, not if you're a good business owner. You're going to double down on the exact same strategy and make 500% return. If I later halve your exclusivity period, you won't stay at 500%. You'll go back to 250%.
The fact that a company has less time to do marketing does actually suggest to me that marketing becomes a less bulletproof, desirable strategy for making money - which is exactly what the author wants. It might still be a bad idea; maybe pricing becomes the most efficient way to generate profit, or maybe the drug industry has such tight margins that there is no efficient way to generate profit and everyone closes up shop.
But it seems at least somewhat reasonable to say that if you expect the cost of marketing to remain constant, and the return per dollar to go down severely, you invest less into the now inefficient strategy.
The other reason that I have difficulty accepting this claim at face value is because I can think of markets where it just isn't true: for example, mobile apps. Nobody smart is investing huge amounts of money into marketing a mobile app. What they're doing is churning out five apps a week on the hope that one of them goes viral.
The lack of exclusivity in that market means that constant development is basically a requirement to keep your head above water.
Now, do we want our drug industry to look like the mobile app market? The mobile market is so opposed to long-term investment that the majority of games and apps developed there are rushed-to-market crap. So we probably don't want our drug research to operate the same way.
But I don't think it's immediately unreasonable that there might be a middle ground we could hit between 20+ years of exclusivity and 4 days of exclusivity.