Russia was not ready for the data center war it started with Ukraine
arstechnica.com
arstechnica.com
They assumed the Ukrainians would give up on day one, and had no plans for a war that lasted a week or years.
A perfect example of hubris and doing zero homework on your opponent.
Iran is another example of exactly the same game plan, well plan that wasnt a plan.
In the cold war the US and Russia speculated about ways to shut down blitzkreig: the Russians developed the doctrine of defensive lines and the US developed the doctrine of "infantry with light vehicles can outmaneuver tanks". Both doctrines proved effective in Ukraine, but drones made the Russian-style defensive line impregnable. Like drones can kill anything that moves but can't break through 1m of concrete... yet!
And to make it all there is the global electronics shortage, I dread having to replace any of my computers or mobile devices right now, replacing a whole data center for a country under sanctions seems painful.
Im going to make a guess and say everybody always knew the Soviets were bloody but never a serious threat.
By 1970 or so it was clear China and Russia were not a unified bloc (heck, Russia supported Chang Kai-shek backstabbing Mao in 1927.) Russia made a lot of progress in economic development in the third quarter of the 20ths century but retrospectively they got the same "WTF happened in 1970?" disease the West did but suffered it worse. And of course strategies of containment were effective just about everywhere except Vietnam.
Seems very underwhelming how little the west reacted and almost did nothing to elevate its forces such in places along the border.