Yeah I largely agree with you, particularly since every large account will never come even close to using their bandwidth, so really it seems like having these huge chunks of SP sitting in accounts that can never use their bandwidth should more than balance out allowing brand new accounts to comment. I personally think there is a need for some kind of delegation for real person verification service - meaning if an account provides extra ID verification to this hypothetical service provider, to show that the account is run by a real human and is the only account run by that human, they could get a small delegation in an amount sufficient to allow normal transaction. If I was Steemit Inc with an obscenely huge % of the total Steem stake and (obviously) no good plan on how to use it or distribute it out, then why not use it to provide a boost to individuals who are willing to prove/verify they are a real person / not a spammer?