Go to the real DAO

maybe i have some mistakes about the multi-party about the DAO,it is not real DAO,because the votes more than 50%,and then some person could executed a proposal.
here is the problem, even if there is not a voting peocess, the team who can executed a proposal still could do it???
i mean ,is there a smart contract or blockchain to make sure only thers is a 50%+ voting,the team can executed a proposal?