Comment by Folcon

Patents are an incentive to encourage an inventor to lay out an invention or process in exchange for the state protecting that process, we did this because there have been in the past inventions that have been lost, that were valuable largely because the inventor died without documenting what they did (keep in mind the first patent was issued in 1331[0], this is old law)

The complicating factor is that as time passes our ability to reverse engineer has grown, however I'm not sure that invalidates the need for patents, the question is whether the new patents are being assessed well from a novelty / inventiveness perspective

-[0]: https://en.wikipedia.org/wiki/History_of_patent_law