Gas stations are not massively profitable businesses. When 10% of the vehicles on the road are electric many of them will go out of business. This will immediately make driving a gasoline powered car more inconvenient. When that happens even more gasoline car owners will be convinced to switch and so on. Rapidly a tipping point will be reached, at which point finding a convenient gas station will be nearly impossible and owning a gasoline powered car will positively suck.
I haven’t thought about the gas station variable in my equation for an electric car future. I simply thought gas stations would add solar power roofs (or use gas to generate electricity) for electric chargers and/or replacement battery packs. But as gas stations focus more on electric car customers, driving a gas-powered car will become inconvenient.