I'm having a hard time even grappling with how that could be true?
I always assumed that intellectual property was invented in order to protect against a specific use case:
If researching a new product is extremely cost intensive. But once a product is invented, it is easy to reverse engineer how the product works. Then the first firm will need intellectual property to put in the initial cost, otherwise they will not do so, as they know they will not have enough time to recoup their costs in the market before a competitor moves in with a copy-cat product without having to paid the initial costs.