This they have done - painfully slowly and very badly. Commercial radio, as the name implies, is a profit making enterprise. It makes most of its money from the sale of radio advertising and programme sponsorship. The commercial imperative has a direct effect on the style and content of commercial radio programming - and therefore on the skills and talents required of the people it employs. You will not, therefore, find many minority interest programmes on commercial radio.
Commercial radio plays pop music - mostly.
It s cheap and it s popular. The other sort of popular cheap radio is phone-in talk radio. Commercial radio stations employ as few people as possible, pay them as little as possible and expect everyone to be able to do everything. They provide no training, offer no job security and are generally foul and disgusting to their staff. Because of this there are usually plenty of job vacancies.