I think bitcoin is not just for the rich only, lower middle person can just use bitcoin, there is no ban of bitcoin in use anyone, just do not use the wrong thing for crime, that's all.
Nope my friend, Bitcoin is using right now as a currency which mean it can absolutely replace other normal currency to do things that normal currency are used to do.
So that mean you could be paid with Bitcoins and that means everyone in this world could have Bitcoin if they want to, Bitcoin isn't only for the rich because it was open for everyone who want to own it.