The value of all cryptocurrencies comes from its scope of use. For example, ETH is the payment method used to produce other coins, but you should clearly understand that the cryptocurrency market is a market that is extremely controlled!
I think that the price of cryptocurrency in these days is normal because small investors can also buy bitcoin due to reasonable price. If the price would more than $20k. Very little people would invest in bitcoin because of the very high price. Gradually with the passage of time the price will increase slowly and that is good besides it bump again like the previous year.