Big oil is big because billions of people rely on hydrocarbons for transport, heating their homes, electricity, and many other things. Demonizing "Big Oil" is a way to evade the fact that people are not willing to pay large amounts to stop the world from warming a few degrees.
That is ignoring the trillions of dollar this industry has spend on think tanks for the downplay of climate change, funding of paid for scientific articles to spread fud, funding conservative anti-science parties, lobbying for laws that actively hinder progress in renewable energies, hoarding patents on renewable energies, buying sustainable competitors and killing them. This is beyond "people don't want to pay more"…
Trillions? That's a lot!