Doge could fail because -
Dogecoin could fail in the near future due to its outdated blockchain technology. The Dogecoin blockchain is built on the Litecoin blockchain, which is based on Bitcoin's Blockchain.
One of the main issues with old blockchains is that they're not scalable. They are unable to manage large volumes of transactions without slowing down or mistakes.
Investors advice on investing in Dogecoin now as this is being the best time to purchase doge. Dogecoin prices are expected to rise as we approach the annual close. The increase in price fluctuations may eventually assist the price to soar and as per Coinpedia doge price prediction it will close the year at $0.118.
Are these cons going to result in dogecoin price failing or Elon Musk support for it make this coin price increase?
If Doge fails because of its outdated tech, so can ltc and btc. That's the exact reason why doge is not going to fail because tech has nothing to do with its success. Tech can be updated. People say bitcoin is outdated but it had a major update (segwit) few years ago and it helped a lot with the scalability issue. Also there is a second layer (LN) working on BTC.
Doge can have those updates too.
Still though, the tech is not what makes doge valuable. It is the memes. If people suddenly stop liking memes, that's the day doge is going to die.