>> Of course you've no obligations for support or maintenance, but with increasing exposure responsibility grows as de facto ever more projects, people, softwares depend on you.

This is an oxymoron. Either you have obligations, or you don't. There's no such thing as having "no obligations" but also "growing responsibility".

I don't understand how you can possibly conclude that just because you've chosen to become dependent on some FOSS library, they owe you anything. You don't get to somehow impose obligations on other people by your choices. They get none of your profits, but they're somehow responsible to you for your business risks? Nonsense.

It is a condition of your use of the code that you've accepted its license, and FOSS licenses are CRYSTAL CLEAR (ALL CAPS) on what obligations or responsibilities the authors have towards you - none whatsoever. Your use of the software is contingent on your acceptance of that license.

If that lack of warranty poses an unacceptable business risk to you, go buy support. Pay a dev to fix the issues you're having, rather than inventing some fictitious responsibility they have to you to do it for free.