Edison's DC power scheme had to make a virtue out of a necessity. For his DC generators to supply loads, they had to be close to them. Westinghouse's AC system supplied the entire Chicago World's Fair from a single, central station. Edison would have needed to space 27 generator across the grounds to provide the same coverage(why he lost the bid). With a DC electrical power system, you were within walking distance of the power station that supplied your home. Without fancy power electronics to create buck/boost convertors, the voltage at your socket was the generator terminal voltage, less ohmic drops in the transmission line.
Edison could sell you the waste heat from his steam turbines (you hope they were turbines, reciprocating pistons could be felt for hundreds of yards through the soles of your feet), but NIMBYism meant no power connection. Westinghouse could supply your house from halfway across the continent. I am sure that there are utilities in large cities that supply heat and light, in the core areas, but the return is too small to lay the pipes in areas of low density housing.