Polkadot and Uniswap it is a fact that they will survive, these coins have created a very strong community, in fact there is a Polkadot network that everyone is talking about, they even say that it may be the competition of BSC, in a similar way UNISWAP is a currency that has a lot of enhancement It has a lot of investment and it has been seen that in the downturns of the market in general, this currency does not fall and touch the bottom all at once, but remains until it reaches an acceptable price level.
These coins will survive, previously I thought that the only coin that would survive apart from ETH was Monero due to its privacy and anonymity features.
Nothing lasts forever but maybe the lifespan of these platforms will be longer than other networks. They have better foundation than most alt projects. If they will not survive for few years, how much more of the crap projects that were launched? So yes, I believe, they can survive but the question is how long? Once new technology is introduced, which is far more advanced, they may also be shelved in the future.
Well there if you find what it is, when there is a technology that is superior to another, the one that was but is not updated is forgotten, although these networks are already being updated in a great way, there are many beta tests that are being given Under these networks, it is likely that if they are investing in these beta tests it is because things are well focused, however now everything is a very good competition, the network that is now the most successful is that of BNB, obviously there is also the ETH network but Due to its high fees it is not very competitive.