As you said what goes up must go down and so on. The Correction is needen on any asset in any market for price stabilization and for for new ATH.
We can see how it works for an example of the price of bitcoin in the january of 2016 and then in 2017 and then in 2018 it is so similar and beside of the politics and the governments regulation for the long ther it is rising...
Good point.