How did companies like NBCâ„¢, whose radio shows were free, make money? Companies bought time from the radio network to run ads for their goods and services. NBCâ„¢ was not in business to make a profit. NBCâ„¢ sold off radio stations to several new companies, one of which formed ABCâ„¢. Corporate sponsors paid for NBCâ„¢'s operating expenses for a chance to be featured on the radio.