You presume there always exists a capable parent to fail. You are displaying privilege. You are displaying a classic case of “I won’t care until it happens to me.” and arguing for perfection.

In this world view, no company should ever be held responsible for harm to others, and no laws should exist to protect people from things, and no services should exist to help those in need of things since apparently everyone can and should just be perfect citizens all the time and raised properly by well-adjusted adults. /s