This is Capitalism. Everything has to be family friendly so it can reach as wide an audience as possible. When you're waiting for customer support, you have to hear a fun jingle so you don't get upset. People have to be talked down to like children so they know their place in the wealth hierarchy. It's an ideology, not in the sense of political beliefs, but rather false ideas that dominate society that we all subconsciously hold to maintain the social system we built on contradictory premises.
I don't think I've presented the full picture, but you asked where this trend is coming from, and to me this is the only common factor and starting point of investigation.
I don't think I've presented the full picture, but you asked where this trend is coming from, and to me this is the only common factor and starting point of investigation.