$1 for Doge is easily possible in this market. It is already at $0.50 and has held its fourth and on coinmarketcap despite undergoing a big correction. However, some new dog meme coins are there to compete with it.
It is true that the $ 1 target is very easy for Dogecoin to achieve, even 4 days ago the Dogecoin price managed to hit the price of $ 0.7.
This means that the closer the Dogecoin price is to reaching the $ 1 price, I even predict that this month Dogecoin will reach a price of $ 1.
But to reach that price of $ 20k is still hard for me to imagine, after all I'm not sure Elon Musk will support Dogecoin for the next 5 years.
So I can't really comment on the Dogecoin price hitting $ 20k in 5 years.