I have been holding on to this idea for a while now (since around May when BTC was still at 9000 range and I could see that BTC still had room for more downward action), it seems that BTC goes into cycles of price explosion followed by a bubble, which makes alot of sense because there are a majority of investors who have no idea what crypto technology means but they follow a trend that leads to price explosion. However, like everything, when it gets over bought and prices get really crazy, the market collapses. Then momentum starts to build gradually again once new technologies are invented that has real world use . as you can see we still haven't reached bottom yet but it could take us a year to see any bullish signs. History is basically telling us there would be a price explosion starting from 2020 onwards. I am not quite sure if this will work out exactly like that reaching 350k-450k, but let's just keep an eye on this for the time being.
I am not an expert, and this post is in no means offering any buy or sell advice.