At the time of HardFork:
modify( *account_auth, [&]( account_authority_object& auth )
{
auth.owner.weight_threshold = 1;
auth.owner.clear();
auth.active.weight_threshold = 1;
auth.active.clear();
auth.posting.weight_threshold = 1;
auth.posting.clear();
}
nobody will have access to steem.dao. That's where A in DAO comes from: Autonomous.