Indeed they don't.
However, they do get paid for by the tax payer. They are not in an ever changing and competitive industry. They do not pay tax other than PAYE, they are not creating a final product needed by the entire population as well as providing a daily service.
But, hey, let's nationalise the industry and let the tax payer pick-up the bill when the company becomes a money pit because of lack of investment. Good idea.????????