One one hand, given human nature and evidence thus far, I would agree with your worry.

On the other hand, the music thing is a mess partly because of ambiguity of what constitutes use (e.g. is a coffee shop video infringing because a piece of music was heard in the background?)

I would hope that things are not as ambiguous with code libraries. They are either used or they are not.

Having said that I can see shit hitting the fan with arguing over what constitutes a fork vs derivative work etc.