I've pretty much said the same; I've also said that successfull businesses tend to get bought out/funded buy larger organisations. This certainly will cause problems with diversity of choice.
Just because a company has a different name, doesn't mean it isn't owned by another you may not know.
I say this as fact and mean no offence, as I'm sure you're aware the way things work.
I'm a private landlord. Landlord with a small l. I have one property. If I want to purchase more houses (which i don't) how do I compete with someone like Blackrock the private equity firm hovering up millions of properties?
So yes coperate capitalism worked for Bill Gates and Steve Jobs. Certainly check out the family tree on gates; but it won't help the majority of small businesses.