The main driver for this current bull run is indeed quite different from the past boom. This time around it is the institutional money that is making things rosier every day and I am sure that more can be coming in the next few months. Let's hope that the historical winter for Bitcoin will never make a comeback again. Yes, there is that strong possibility that with Bitcoin and Ethereum winning the market, speculative altcoins can find no strong support from the market and hence they can be experiencing natural deaths.