It's one of the old coins that will not die, I still remember it's good old days it's the top memes in the crypto community and don't think Dogecoin has an active competitor for being a meme coin, maybe it will not climb the top 10, but it will always profitable in the market.
Agree. Dogecoin is one of the oldest coins that has stood the test of time. Other altcoins have simply failed, being abandoned by their whole community, as well as, their dev team. While Dogecoin has no active development, it's still admired and widely supported by its followers. The success of Dogecoin has been such, that another alternative emerged with the same purpose of being a meme cryptocurrency. Such alternative is called Garlicoin which had a great boost in mainstream adoption within its early days back in 2017. But now, it seems to be largely abandoned not only by its dev team, but also by its own community making it a useless coin with no purpose at all.
Which is why, I believe that Dogecoin will become the true winner of the meme cryptocurrency space that'll last for many years to come. It's the DOGE community which makes the whole thing interesting to hodlers of the coin. With dirt cheap transaction fees, and blazing fast confirmations times, there isn't a reason why you should avoid this good-old cryptocurrency after all. It's no wonder why Vitalik and other cryptocurrency enthusiasts have shown a level of affection for the cryptocurrency.
Someday, Dogecoin will be able to shine among other cryptocurrencies on the market, as it becomes adopted by a new development team. Only then, it could implement new technologies and features to keep up to pace with most actively developed altcoins within the mainstream world. It just needs that boost, in order to gain traction like never before. Considering that DOGE's All-time-high (ATH) was around $0.02 per coin, it makes sense to hold some coins for a very long time.
Nonetheless, the best thing Vitalik could do is to merge Dogecoin into the Ethereum blockchain by either launching an ERC-20 variant of it, or simply making a bridge between both blockchains for true interoperability. Just my thoughts