Simple, have the fcc rules revert to they way they were back in 1975...and give large corporations one year to divest there stations, or lose them. Now, for you youngsters who are wondering how the rules were differant back in 1975...here is the way things used to be:
1) All on-air people needed a fcc license and pass a simple test (mostly rules and power formulas) for it, this was the third class license with broadcast endorsement. and all engineers also had to pass an engineering test (first class license), also ALL stations had to have at least one licensed engineer on staff. plus jocks around the clock to take meter readings.
2) Require that corporations follow the old 7-7-7 rules, which stated any single corporation could ONLY own 7am stations, 7 fm stations and 7 tv stations MAX nationwide, and no more than 1am, 1fm and 1 tv in ANY SINGLE MARKET. This would return us to the days when kids received training and built their skills at small market station and worked their way up to bigger markets as they got better. (not to mention return the 50,000+ jobs that were eliminated when the 7-7-7 rules was done away with by the fcc). This rule also would mean that you would have (in a major market) about 30 seperate owners, instead of 3 or 4 like today, thus causing the stations to really have to compete for listeners, and bring the stations power back to programmers and talent instead of sales and gm's where it exists today.
3) do away with all the little low power stations and such..loosen up the frequencies again.
Doing these three things would create tens of thousands of jobs, bring back the old style radio trainings grounds for talent, create a basis for wealth again for talent, and give life to our business that is now almost dead.