There is no chance whatsoever that ETH can reach $5k anytime soon. Appreciate this thread was started before the coronavirus outbreak, but even if it hadn't happened, $5k would be very optimistic. ETH is certainly a great project and they are progressing well with the roadmap towards hybrid PoS and 2.0 ... but that sort of huge sudden increase for a high cap coin seems very unlikely.
Still, there is one option - inflation. If governments continue to solve all problems by printing money, sooner or later it will result in inflation. I'm not saying that this is being done wrong now (at the moment this is a necessary measure since the crisis is very serious), but I hope that governments will not abuse it.
Agreed with you inflation will become very big problem when current would be calm down so it would help the crypto projects to reach out new ATH. I also think there are so many possibilities but it is much hard to to predict at this stage.