the white paper says there will be 20 block producers elected by token holders, they will produce one block each, in a rotating schedule, the "delegated" proof of stake. There will be others competing to enter the top 20 but they will not be delegated to produce blocks unless they get voted in. From my understanding, each of these 20 block producer will have a copy of all the stored data, providing the distributed redundancy, and i guess any serious competitors will also need to provide a copy of all the data to be eligible to enter the elected 20... Once this data store grows large it will be only super well resourced operations that could compete for election. Have I understood this correctly?