Obama didn't kill coal, natural gas did.
Obama tried to kill fracking but it took off anyway.
Trump tried to save coal but it died anyway.
Repeat after me, the economics of the private sector are more powerful than any government.
Exactly, "repeat after me", sounds almost like Trump, and you completely ignored the post you responded to.
In general, your points are not necessarily wrong in themselves, but absolutely one sided.
There is, of course, nothing wrong with individual action, on the contrary.
But there is something wrong with denying political action.
Tesla (and Fiska, GM, Ford) did receive help for electric car production and sales in more ways than you appear to acknowledge. And that really helped. A lot.
For example, we didn't mention that Tesla's original Roadster, its starting point, was said to be motivated as a response to the "killing" of GM's EV1, which in turn was a result of California Air Resource Board's (CARB) requirements to the car industry. So maybe without CARB, Elon Musk would be doing nothing else than SpaceX. (Not that I would really know.)
Tesla Model S, Fiska, GM Volt, Ford all started with receiving electric car loans and subsidies. Without that, I don't know what you would be driving. It probably would still happen, but who knows when?
You haven't answer the question: What if EVs remained more expensive, even with all innovation? What if the price of gasoline was so low that controlled-explosion cars just remained more economical, in the absence of carbon tax? Who says zero emission cars will necessarily be more economical than those with lots of emissions, by what principle would that have to be always true?
You have now mentioned that you acknowledge climate change, but you are silent on the time element. What if the economical advantage of EVs with reduced gasoline prices will be so small that except for a small green fan club, it would take a hundred years until the economy completely converts? Not unthinkable at all.
Are you in favor of stopping subsidies for the oil industry?
You haven't answered that either.
The current political conditions are unfair for electric cars (and even more so once Trump is done). You don't mind?
If Trump and Co. make most believe that climate change is a hoax or ignorable, I'm not sure much would change in the next, say, 70 years.
Consider that electricity used by EVs needs to change as well. Just natural gas instead of coal isn't good enough, with a developing economy.