Looking only at pricing, UBS said that, “a twenty-fold increase in bitcoin prices in just two years, and an absence of any fundamental economic backing, cryptocurrency prices are almost certainly a bubble.”
Blockchain utility doesn't make crypto not a bubble. That'll be important to remember for people buying now expecting to make big gains at this cost basis, and there's real risk there.
FOr me blockchain is the future and certainly not a bubble. as for BTC itself one thing is clear, the price is not driven by demand or growing usecases. the Price is driven by speculation on the future of the technology and on the huge profits it´s been providing. That said when newer and better tech arrives BTC will loose value or will be kept as a store of value asset as it´s proven its strengh . If its a bubble, will now after or if it bursts:)
As for Jamie Dimon we should ask hm, how a huge expert on driving profit out of speculative assets could have missed the biggest one ever. Because even if the bubble bursts, BTC won´t be erased from history:)