Here in Canada, it’s the law that radio stations have to devote at least 35% of their playlist to Canadian music. The licenses of other stations state that the quota be 40%.
Do any other countries do the same sort of thing for domestic content? Quite a few, actually.
In Australia, the number is 25%. France, South Africa and South Korea all require 40% domestic music. Malaysia’s level is 60% while in Brazil, 70% of the music played on the radio must be by Brazilian artists.
But even that’s not the highest quota.
In Nigeria, a full 80% of all music on the radio must be local.