It's not about whether you think it is good, it's about whether it is good for the firm or person who came up with the idea and who put the time and effort into R&D to be able to capitalise on it and make a profit from that investment, versus being ripped off wholesale by bigger firms who can undercut them when it comes to operating at scale.
Let's say you spend 5 years investing your time, energy and capital in and inventing a new printing technique and printer that reduces ink waste by 20%. If upon launch Rank Xerox takes your idea and undercuts you in a couple of months putting out its own cheaper model using the same principles your business is fucked.
The principle of patents is good, it's the implementation which is more often the issue. In large part, the purpose is to protect innovators from being ripped off by big businesses of a similar nature that make competing products at their inception.
Should WB have been allowed to lock down the nemesis system? Sure. However, for 15 years? I'm not so convinced, even more so given they did fuck and all with it outside of the Mordor games.
I think patents should operate from a use-it or lose-it basis after 5 years. You take it out, and you have a 5-year window to capitalise upon it but if you are not using it after that then it expires, and the onus is on you to demonstrate to the patents office that it is still applicable.
I was talking about its application in games specifically. No longer interested in discussing broader ideologies in this forum.
Not only does WB have a lock on the Nemesis system for the next 11 years, they've had it for many years in the past, and as you said, they didn't do much with it and the only studio that was going to use it in a new game is shut down.
The use-it or lose-it concept you proposed is definitely better than what the current system is, I still think it doesn't solve the issue.
We need to realize that games are historically built off each others ideas and that they rip off from on another all the time, and that's not a bad thing. Imagine all the DooM clones or souls-likes not existing because idtech and FromSoftware decided they'd patent basic game mechanics and concepts.