I don't see a lot of difference between 'big oil' and 'big electricity' or 'big battery manufacturer' or 'big motor manufacturer' or 'big silicon chip manufacturer' There are all sorts of things you rely on suppliers for so your illusion of independence because one of these is avoidable is indeed hard to understand.
Nor do I understand why you don't realise that if oil is synthesised by other methods, then the political dimension is reduced and you really don't need to worry - ever - because it is an infinitely renewable resource as long as the energy to make it is available.
But then I don't understand the apparent fear americans have of relying on 'forn oil' anyway particularly when their biggest supplier of it is that hothouse of political and religious fundamentalism, that 'rogue state' run by mad mullahs, that fountain of radical terrorism ... er... Canada!