The issue isn't for Bitcoin really, it is for whatever the big fellas decide to do in the future because they may be able to replace their own outdated practices with their own chains and rules and then start cutting all ties with n'non-approved' chains. At some point I think, Bitcoin and alts become useless if there is no way to buy products. Lamborghini may not accept it.

Average people are idiots. They will back what they know and repeat what they know. This is why most of the innovation centres on doing what has already been done, except fantastically, on the blockchain.