Oil prices going back up to $100 a barrel would drive adoption of electric cars at a much faster pace.
No one bought SUVs in 2008-2010, but now they're one of the most popular types of cars and ford has alltogether stopped making car models
The greater the cost the more conservation makes business sense.
If an efficient fridge is only 15$/month cheaper it's not replacing your current fridge. At 50$/month it quickly pays off.
It is now just a matter of capital costs replacing old infrastructure with new while ramping up the industries that provide the replacements.
Inefficiencies scale with ramp up speed, but if you increase the cost of fossil fuels those inefficiencies are more competitive so you get a faster ramp-up.