Or maybe there would be many more of such projects if people weren't put off from starting them in the first place by copyright laws.
Maybe, but based on the evidence we have that's just speculation. Perhaps copyright and fear of litigation isn't a common reason why people don't make things. As we see from the link this thread is about, people do make things using other people's IP.
Maybe copyright laws push people who are concerned about being sued to make original works instead of making nothing as you're asserting. That would actually be very a positive outcome, and arguably a great reason to keep copyrights. After all, there's nothing stopping people making things. The only thing they're prevented from doing is using someone else's IP.
We have lots of evidence of chilling effects from copyright law.
I suspect that many of the people who are creating things which violate copyright law are simply unaware that what they are doing is against the law (they feel that they have rights which they actually don't) or they misunderstand the law (See: "No Copyright Intended" descriptions on youtube videos).
Some certainly also think that enforcement is lax enough that they won't be caught, or at least not before others have mirrored the content, or that they won't face meaningful consequences when they are caught, but I think we absolutely cannot say that the existence of copyright violations proves that the laws aren't hurting us by preventing popular original works from being made.
> The only thing they're prevented from doing is using someone else's IP.
Maybe, but based on the evidence we have that's just speculation. Perhaps copyright and fear of litigation isn't a common reason why people don't make things. As we see from the link this thread is about, people do make things using other people's IP.
Maybe copyright laws push people who are concerned about being sued to make original works instead of making nothing as you're asserting. That would actually be very a positive outcome, and arguably a great reason to keep copyrights. After all, there's nothing stopping people making things. The only thing they're prevented from doing is using someone else's IP.