i understand to an extent about the hierarchal configuration of the internet and i've wondering what if i can be compromised or sabotaged,,, what backup will move in or will that be the end?

it seems like everyone is building their infrastructure on the internet, satellites and other inter-network devices. could it not be a 'preset' that would ensure all things at a point will be relying on this infrastructure when it will all be destroyed and the cause will be given a name, and all existing transactions will be halted. then ll be left with just an alternative that they wld define,

The Internet was designed to be a robust,
fault-tolerant system such that if a part is
destroyed it does not affect the functioning
of the whole.

The Internet is essentially a network of networks. Its almost impossible for the entire Internet to go down.
Yes, a section of the Internet can be down but other sections would be up-and-running.