As i understand so far ERC20 EOS tokens are
" distribution list that the public can use to launch and distribute an EOS.IO-based blockchain and community"
So what guarantee that if someone launched EOS blockchain will use this list while as terms of sale he is not obliged to do , he may use any other list , add to it or exclude any erc20 token holder from the acutual eos.io blockchain
And what guarantee that there will not be too many tokens on that blockchain that it will lose value or that would be too many blockchains with the same list and software that the price will go down dramaticlly
I think 
Also i wonder why its stated in the token sale terms that the erc20 tokens dont have any rights on the actual eos blockchain , while it should have otherwise anyone can launche a blockchain using eos software ignoring the "distrubtion list"