Was going to mention the same thing. Even with cable/internet there are plenty of monopoly horror stories, but for power it's probably 10x worse. I'm in counties where you can pick other providers, but the powerlines and everything are very much still owned by PG&E (so billing is also handled by them). There is no escaping them unless you go offgrid completely, which is easier said than done (especially if you consider heating loads also and cutting off natural gas too).
The Cadillac example is ridiculously off given there are so many alternatives to buying a Cadillac (including used ones or even riding public transit or ridesharing) in comparison.
That and Cadillac has to actually give a damn to establish a value proposition so customers choose them instead of choosing another option.
PG&E just tells people to go off grid or pay them $$$$. Total BS that they aren't required to get better/efficient over time like every other normal business out there.