Who are mining currently, do it with the hope that the Altcoins are revalued in the future to obtain the ROI.
Nope, electricity does not cost the same everywhere. Also some people have a flat rate monthly electrical bill.
And the problem with your idea is that you have to wait 1 year to get profit. The coin could die during this time, then you get nothing.
You have to wait the same time than PoW to obtain profit. With PoS every day you have solved blocks and your rewards... My post is to show that it is possible do the same with PoS than PoW, but without Energy use and its cost...