When Doge Coin was created the developers had no any future plans for the token, they were just trying to create a joke for the crypto market that was rapidly expanding back in 2013. Now dogecoin is one of the most popular coins. Many meme coins are launched this way, with no initial plans, but they develop plans over time. That's why it's hard to judge a meme coin and know whether it would be profitable or not. One thing that can help you out is checking its community based support, as well as seeing how popular it is among the early users.