[viztor]

I can imagine major power or North Korea doing those sort of things when the circumstances come, but the 'rich people' part is pure non-sense.

First of all they have no interest in doing such.

Secondly, Attacking cable infrastructure using submarines is in effect a declaration of war (or act of terrorism). I understand this world gives you this illusion that money = power, but just remember who prints the currency, who owns the army. Only because this sort of things are not in your daily life so often like the rich people are doesn't mean they don't exist.

The last but not the least, they likely won't be rich at all when the governments of countries affected freezes their assets, which should be the least of their concerns if that actually happens.