Whatever marginal effect foreign interference has, it's almost certainly dwarfed by interference, or "lobbying", from domestic capitalists.
Dictatorships though have a more macroscopically sinister agenda against successful democratic rivals.
Just look at catastrophes caused by PG&E in 2018, ERCOT in 2021, or First Energy in 2003. Not a single one was caused by an attack on critical infrastructure, they're just cutting corners!