The thing is people also said this about the internet before it became mainstream. Back in the 1980's people did not think of the internet like it is today, but rather only big corporations would own websites and people would visit and shop on them, but these days everyone can have their own website, and I think Bitcoin should be the same.
I don't negate that Bitcoin might be used for daily payments in the future but I think that increasing block size isn't the best way to do it. Introducing SegWit already helped us to decrease the transaction fees. Did you mean that Bitcoin will be centralised because the same thing happened to the Internet? Internet purpose wasn't to become mainstream, they planned to used it for education and military purposes.
