I am not sure I follow; how would your switch force people to buy energy from the grid?
This kind of last-ditch-excuse bullsh*t is a sure sign that fossil fuel folks are scared. No matter what your opinion is of fossil fuels usage might be, it is not an unlimited resource and we are squandering what we have simply because it's profitable for some. Even if we weren't mucking with the climate, this stuff won't last forever. I've heard predictions of 100 years of oil and 500 years of coal. So what happens in 2515?
Most humans are dum-dums.
Maybe... but does it make sense for us to worry? At present speed, 100 years of technology is an abyss, 500 are just unthinkable. Try to imagine Cortès, Columbus, Da Vinci and Ivan the Terrible debating how to use their technology to save us people of the XXI century from some disaster they predicted. Aren't they cute?
I'm not saying we shouldn't take good care of the environment; just that we should never forget that our children and grandchildren will know a lot more than we do.