The production of fossil fuels is a very messy business, corporations don't just pull the oil from the ground and then ship it to gas stations. The refining process produces all sorts of emissions. Take the oil sands in Canada, if production of fossil fuels doesn't create emissions and pollution like you said, where is all the pollution/emissions coming from in that area? Why have I read about water table contamination in the area, multiple times over the years?
Let's say the governments of the world went ahead (they won't) and shutdown those 36 companies. Would global emissions drop? Of course they would. Eventually the fuel supply would run out and ALL OF US won't be able to produce said emissions. So yes, it is the company that should be held responsiblefor they are providing the product. Remove the product, remove the problem. If a drug dealer and a drug user are arrested, who ends up paying more in jail time? Exactly. Hold these companies responsible for the damage they are doing.
Most consumers don't have a choice... It is not a matter of "convincing" them to change. The average person drives the car available to them which is the one they can afford. If I had a choice to fuel my car in other ways that wouldn't financially ruin me, I would. The average Canadian brings in $60 000/year. The base Telsa model in Canada sells for $60 000 before taxes/fees. Whereas I can buy a decent used ICE car for $15 000. I don't know many people who are willing to buy a car at a 400% price increase and force them to struggle financially. The average person would help reduce emissions if they could afford it. My point is, until a financially feasible alternative is available, people are not going to switch. In addition, it doesn't help convince me to change when the public see politicians and celebrities flying around the world in private jets in order to attend lavish parties with other millionaires. Which produce more emissions in one day than I will produce in a single year. But it is mission critical that I change... not them.