The western economy is almost completely built using off-prem in Cloud PaaS environments. It should be pretty fun when WW3 starts and not a single hospital, school, laboratory, or factory can operate.
And the last scenario is the real problem: While there are enough cable repair ships to continuously handle a normal rate of simultaneous peak failures, fixing multiple cuts can quickly exceed their capacity. (There's nothing that says an attacker can only cut the same cable in one spot!)
Enlighten us then. How would suggest Russia should be treated?
For a certain period of time, they definitely had significant influence.
They just refuse to acknowledge how Russia really operates.
By and large they have, actually, which is why one seldom hears the "oligarchs" mantra these days.
In other words -- though you're correct in response to the flagged commment, in the bigger-picture sense, you're railing against a straw man.