As predicted from various circles, the price of bitcoin is very high which is worried that it will be like a bubble, one day it will break apart,,
Closest one is the house bubble (well mortgage) which was after dotcom, well there was too many toxic debt that people couldn't afford to pay back and defaulted on their loans, which created a collapse of the bubble. Same happened to bitcoin, went up to 20 thousand dollars and there wasn't enough people who were willing to pay that much for one bitcoin. However we are already at 3500, there are plenty of people willing to buy from here, RIGHT NOW its not a bubble, it used to be considered that way on 20 thousand dollars but definitely not even remotely a bubble in today's prices.