Google builds entire datacenters with their own transformers and power lines, if not their own powerplants. You plug these datacenters directly into the high voltage networks that don’t have big capacity problems.
The low voltage grids in residential areas on the other hand were build as cheap as possible, so increasing the load by 20% is already too much for most of them.
Why should it be? A faulty software update from a 3rd party crashes the operating system. The exact same thing could happen to Linux hosts as well with how much access those IPSec programms usually get.