Even if we proceed from the fact that bitkoyn will ever cost a million dollars, then millionaires in bitkoynah will be much less than 21 million. So, the first more than a million bitokoynov got Satoshi Nakamoto, about six million bitokoyanov, they say, was lost due to the loss of access to them. And this figure of lost bitcoins will only increase.
 True, it is already expected that not so much because of its greater cost and more careful attitude towards it. In addition, a significant number of people have not one bitokoyu, but several and even several hundred.
     Thus, I think that real millionaires with bitkoy, if it increases in value to a million dollars, will be no more than ten million people.