And enable this for other countries pls!

Oh that is a great idea!

I agree with this, I'd gladly watch ads for bits, since I cannot spend money anyway but would love to be able to support other channels. But even with this, I don't think the solution is to randomly ad adds to a stream. An add played randomly might happen in some important moment, so if you are going to show an add randomly, at least enable it so that the sound isn't muted?