In the 1st world I think very few people would ding you for building a business model that relied on a predictable steady supply of electricity. Non issue.
Data centers are supposed to have backup generators and systems in place to fuel them up should the need arise. Can't do the same for every house in a city.
However I agree, building something that depends on the grid is not crazy. For example: TVs, computers, light bulbs, fridges, ...
