No amount of innovation outside of Bell Telephone could have broken it up. TBL might be correct that we are near that point today with the Internet. The big players either buy you our or copy your innovation and crush you.
In fact it's worse than that. Look at all the advise given to startups. Create something that one of the big players will need and get bought out -- that's been the dream for most startups for a long time now. This is reinforced and required by VC investors. The whole idea of building an small or medium sized Internet company that intends to become profitable and remain in business is now the exception rather than the rule.
Everything in the Silicon Valley ecosystem is designed to reinforce the big players.
TBL might be right that it could take a Ma Bell breakup kind of intervention to space where innovation outside of the big companies can have a chance. It's not that there isn't a level playing field. There isn't a playing field left at all -- it's branded multi-billion dollar stadiums all the way down.