The plan by RE people is 'Let's hope that a hundred different unlikely events all line up exactly right, and we'll be able to go fully RE'. This is not a realistic plan. If you did software engineering like this, you would be laughed out of the room (and then fired).
Fossil fuel companies would have no special advantage in most renewable and storage technologies, so it's rational they'd try to stick with what they're good at for as long as possible, perhaps even going down with the ship and returning value to the shareholders as they collapse.
The plan by RE people is 'Let's hope that a hundred different unlikely events all line up exactly right, and we'll be able to go fully RE'. This is not a realistic plan. If you did software engineering like this, you would be laughed out of the room (and then fired).