But the amount we're all paying for that is small compared to the price rises with the majority of it related to wholesale prices, and a good chunk due to the cost of installing unnecessary smart meters (the first generation weren't fit for purpose) and feed in tariffs etc.
Years ago people were paid many times more the unit cost of electricity for all that they sold back to the grid and some might still be on contracts earning that amount. There were also stupid schemes like farmers being paid a fortune to heat empty barns.
While it shouldn't be the case that anyone with a laptop, which was the case for a lot of them, including Avro, can start an energy company, that's a relatively small part of the whole issue right now and we'd still be in the shit if the extra £50 or whatever this is costing us was taken off the bills.