Actually everybody can speculate about the price increasing or decreasing in the future. What is happening now is that some people are simply speculating that the value of a Bitcoin might reach $1000000 by 2020.
But we still unsure. And when the market crashes I can bet you, there will be a lot of losers and winners too. But the winners will be very small compared to the losers.
In December the price of a Bitcoin was worth over $16000 and what happens in January, February and March is that it falls below $10000.
People are scared and the foolish ones who turned all their cash into Bitcoins are now regretting. This was the same thing that happened in the 90s when there was an internet bubble and every company that had a .com and sold shares to the public was gaining.
As people went in and bought shares in new companies. When the market crash happened, millions of people lost their money. That is the same thing happening now in the cryptocurrency space.
In the 90s sure many people lost their money but the smart investors who believed in the growing companies like Amazon, Google, Microsoft, Apple and invested there are now millionaires and some of them have reached the billion dollar mark.