Quotes from the linked article on LBJ:
“Asked in an interview whether Johnson’s status as a member of Congress helped his wife’s application, Corcoran said, “How do you think these things work? These guys [FCC staffers] have been around. You don’t have to spell things out for them.”
…
Mrs. Johnson’s ability as a business woman was not the crucial factor in the acquisition of the station or, once it was acquired, in its early growth. … Lyndon Johnson had worked at politics for years to achieve power; now he was working at politics to make money.“