[eschneider]

I've worked on many commercial products that have incorporated open source components (and respected their licenses.) I was always under the assumption that it there was a problem with the open source bits, it was MY responsibility to resolve those problems for my customers, because it was part of the product I was shipping. Full Stop.

That almost always meant getting into the code and fixing what I needed fixed and (hopefully) getting a PR accepted so it'd be in the next release. If I needed fixes from the maintainer to support my commercial product, I'd expect that I'd need to pay...something to make it a priority for them. I mean, my problems aren't their problems, right?

[II2II]

You are correct. Open source licenses, at least the ones I'm aware of, have no warranty clause. That said, it won't prevent people/businesses from asking/demanding a fix from the developer. It simply means the developer doesn't have to remedy the problem.