Wrong analogy. It's more like a distributer (not label) telling its affiliates that for their CDs to be shipped, the songs on them must now have been originally

Wrong analogy. It's more like a distributer (not label) telling its affiliates that for their CDs to be shipped, the songs on them must now have been originally written only in Mixolydian mode in the key of G with a 4/4 time signature. Anything else is not allowed, especially something that doesn't even use western musical scales or tuning.