I still think if copyright laws weren’t so oppressive, 50 years would be fair (And still a huge improvement from the current situation).
Maybe have it in tiers or something? First 10 years: full copyright - until 30: similar products allowed, but no blatant reproduction - until 50: reproduction allowed as long as it’s not for-profit - post 50: public domain?
They are, but it’s not like they’re very definite nowadays either.
I’d say “similar product” is anything that doesn’t try to pass off as the original one, and is mechanically different enough. Palworld for example, or all the other Pokéclones that popped up in recent years.
They wouldn’t, in that period I’d allow stuff like piracy or free cultural events, stuff like that. Obviously the copyright holder would still be able to profit off of their own products, but everyone else would have to ask them to do so.
Because those are things that humanity needs to progress. I do think they could be longer in a different way, like “they can be used by anyone without consent from the inventor, but they need to pay a small percentage in royalties” or something like that, just to ensure they have a permanent source of income that’s enough to live off. I’m not knowledgeable enough about that to talk though, so I can’t really answer that question without going into baseless speculations.