Put simply - because the market is not hugely over-inflated at this point by an abundance of uneducated investment. What goes up, must come down and this year boy did it come down.
Last year. It came down last year.
I believe this year will finally be the year of slow return to the mean. I see Bitcoin as largely oversold and the last move below 5k was pure panic with people running around like headless chickens. What went so far into depression has to bounce back and have some green weeks. We haven't seen a full green week for over a year.