The price of 1 Dogecoin = $1 USD would probably be the case if a group of whales bought more Dogecoin at that price.
If you look at Dogecoin's market capitalization in CMC of $ 9,330,935,988 then the Dogecoin price to reach $1 USD still requires a $1 billion boost from new investors.
It aims to increase the price of Dogecoin to $0.5 USD as a large supply can result in a small coin price