I feel you like you cited that as an example of people knowing companies behind things and you don't realize that very many people do not know that the same company owns Facebook and Instagram...

Corporate structures are things you know about if you follow tech news, but people mostly do not know about them otherwise. They've never heard of "Alphabet" either. Stuff like that.

LOL. The average Instagram user for sure doesn't know the company behind it. Also, "mathisfun", you might not be the typical person on this planet.

Quick test, who makes Mars, Twix, Snickers?