A lot of people already did that. In the past, one even says that the Bitcoin price will be reaching $500K, if not he will be eating his own dick, still waiting for that to happen though. This may seem impossible for some but it is possible, the problem is that it still needs time. It can't just reach that kind of price overnight and with the adoption so slow right now, we are still far from it.
But speculation is alays there,like what happened in 2017 when there are several speculation that Bitcoin price will touch 20,000$ but many laugh right?but when it happens they felt the bitterness and the lost of not trusting such speculations.