Um.. you don't need to be an expert in security, comp.science or economics to know that putting all eggs in one basket may not be a great idea as introduces one giant systemic target. If anything, regular people here are uniquely qualified to say something along the lines of:

Oi, this is ridiculous. Maybe more things should be ran locally..

FWIW, it was instructive to me as to which companies were not able to function today.