For example, by raising the new registration price to $1,000,000,000. Then, the DAO can register it at zero cost (it will get 100% of the fee refunded instantly

For example, by raising the new registration price to $1,000,000,000. Then, the DAO can register it at zero cost (it will get 100% of the fee refunded instantly), but anybody else would have to pay sticker price. I believe there's also more complex schemes, where you directly restrict who can register it, but I'm not sure about those.