$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.
Now Doge can and will rise in price up to one dollar. However, after five years, I'm not even sure that such a token will exist. However, if it does, then with a minimum price. Its current half dollar price will probably be too high in five years.
Not all useful cryptocurrencies will survive five years from now. The hype around this token will soon end and it will simply become useless.