Or will you see a decrease in demand/supply and lose economies of scale?
Na. What I'm wishing for is a pipe dream. I think market momentum will carry the IC engine far beyond when that becomes a concern. Because every industry associated with the IC engine will try to keep that momentum going until they position themselves so they are fully prepared to step away. Right now Tesla is only changing the momentum in the electric car industry with practically no impact on the momentum IC engine industry.