Dafuq, are you a newbie on the crypto side? I'm not sure about that cause you have a high ranking on this forum, Cosmos (ATOM) is one of the old projects that has proven that they are able to survive until now. Of course, the sustainability they are currently experiencing is because their project is used by many people. I don't want to say more, their ranking on CMC proves it all.
Oh my friend, you still have a long way to go. Crypto newbie comes to bitcointalk and creates a thread "what to buy to earn", a crypto pro comes and advises him projects like atom because they are old and proven in battle, a veteran with 6 years of experience in crypto, who has been making a living from investing for 7 years, comes and replies "don't buy anything, because 99% will fall to zero and even if you manage to hit that 1%, it will not bring profits adequate to the risk"
In 2019, there were also people like you who proposed investing in EOS, NEM, XLM, IOTA, NEO, ETC for the same reasons. They were all in top 20 CMC. Despite the fact that another 4 years have passed, and in 2019 we were at the bottom of the previous bear market, the mentioned projects are still in the red compared to the valuations from 2019 and few people seem to remember them. It will be the same with bubbles like an atom (unless it is in the 1% of those that will not die immediately)