They already do. Federal government regularly fails spectacularly and it regularly costs us taxpayers billions. And so do local, state, municipal, etc. governments. Presenting it as if this is some unheard of failure that disqualifies everybody involved including the candidate is silly. A lot of successful websites failed, many multiple times and for prolonged period, despite employing top talent and spending millions on them. Failure is always an option.

Yes, people who make mistakes can still run the entire USA. It has been done before.

I don't know about you but there were days when I was trying to get a web app to support IE6 that I was envious of how easy the president has it.

Heck, I remember a Republican candidate who was amazed by the scanner at the supermarket checkout.