No-one cares about this. People have no clue about licenses and just copy-paste whatever. If someone gets access to their code and see all the violations they're screwed anyway.
Obviously they aren't, but just as obviously, "the legal department didn't review this, therefore it's safe to assume it's legal" would not pass muster with said legal department. :) Kiro's comment ("if someone gets access to their code and sees all the violations they're screwed anyway") is probably technically accurate, even if in practice you're unlikely to get caught. As other people have noted elsewhere in the comments here, the Google v. Oracle case over Java definitely suggests that verbatim copying of just a few lines, even for trivial functions, is enough to get you in trouble if those lines aren't licensed in a way that lets you do that.
This is absolutely not true. While some individuals might not care and might not always conform to their companies' policies, most companies have policies, and most employees are aware of and mindful of these policies.
It's absolutely the case that before using certain libraries, most engineers in large corporations will make sure they are allowed to use that library. And if they don't, they are doing their job very badly IMO.
This kind of sucks honestly, copy and pasting without understanding has lead to all sorts of issues in IT. Not to mention legal issues as mentioned by another reply.
