Nah the nissan leaf was released about 15 years ago. Electric mobility was a proven use case years before the release of the roadster or model S. It wasn't the paradigm shift that the iPhone was. (and I don't have any doubts we wouldn't have gotten to an iPhone experience a few years later, either. I used smartphones before the iPhone with touchscreens, less smooth and intuitive, but already had miniaturized mobile-first apps based on touch. Android was released a few months after iOS and had been in parallel development for 5 the previous 5 years prior to iOS being unveiled...)
Tesla accelerated the electric car market several years, that's for sure. But nothing more than that.
The most important development for the feasibility of electric cars has not been automotive innovation (not the powertrain, the motor, the wheels, the interior or whatever), but battery innovation.
And battery innovation (i.e. cheaper, lighter, more capacity, better heat management, better durability) has been ongoing regardless of automotive even existing as an industry.
This has been the driving factor for the electrification of cars, not any one car company but the battery industry. Tesla simply was the best first mover.
https://ourworldindata.org/images/published/Battery-cost-dec...