I also feel like this isn't a good idea but who knows.

In 2009 the Portuguese government introduced a mandatory quota of 25% Portuguese music in all radio stations. It was absolutely terrible at the time as all Portuguese music was invariably shitty. Flash forward 9 years and, in my opinion, things are much better. We still have a bunch of bad music but meanwhile a lot new quality artists appeared and became popular. Maybe it has nothing to do with the quota's but take it as you will.