I think 5k is possible. I remember its ATH that reaches 4k plus so this is not hard especially when ETH development is just around the corner. It would take years to see that grow but as they continously progress and eliminate a lot of flaws on their network then its a good stance for the ethereum network to fully deploy a very useful platform. Staking will launch very soon and most of the investors are anticipating to join on this. Weve got already some eth locked and for sure many will join as validators on eth in the future.