That's a bit short. Consumers of coffee, biscuits, etc do not need to know their trademarks are owned by the same legal entity or their subsidies, nor would they benefit from this knowledge.
Completely the opposite with Google or Microsoft. You need to know that YouTube is Google because it has an impact on privacy things, and you arguably benefit from their link with single sign on, reduced complexity, unified notification center, etcetera.
You're repeating the justification for the status quo, but at some point these undeniable benefits of an integrated platform start to be dominated by growing complexities, weird interdependencies and conflicts of interest. I think we're over the tipping point now.
Completely the opposite with Google or Microsoft. You need to know that YouTube is Google because it has an impact on privacy things, and you arguably benefit from their link with single sign on, reduced complexity, unified notification center, etcetera.