Could be - but isn't. > ... as the cost of emitting carbon rises, people will search for alternatives ... The only alternative for most poorer individuals is

Could be - but isn't. > ... as the cost of emitting carbon rises, people will search for alternatives ... The only alternative for most poorer individuals is the power grid and while it is more convenient it is nowhere close to carbon based fuels in price. So it is used for small things, and for heating carbon based fuels are used. And, perhaps ironically, the grid is becoming on a per-person/per-customer basis more expensive because the people who traditionally pay the bill, large, industrial users, have by far the easiest time and the most to gain switching to solar.