Your thoughts are likely not very far fetched, but in this case, to the best of my knowledge, IC and LEOs seem to be more worried about stopping individual 'bad guys'( quotations, because I hate this term ) from causing damage with ICE machines hence solutions like mandated remote off switch and so on.
On the political assassination front, wasn't there a story out about one such attempt or did I dream it?
There was a suspicious "political staffer dies from freak single car accident" events shortly after the first Jeep Cherokee was remotely taken control of. That's what stuck with me.
LEOs are also notoriously corrupt and difficult to keep tabs on. Imagine police harassment when they have the ability to remotely shut off your car.
On the political assassination front, wasn't there a story out about one such attempt or did I dream it?