I think about a great opportunity people had miss when Bitcoin was still in a lower price, imagine how many people Bitcoin would have made a millionaire, though by then most people were a bit skeptical about the growth of Bitcoin, if it has a good potential or save to invest.
If people had known Bitcoin will surge this way almost fifty or more percent of world population would have become a millionaire.
I love research, please share you knowledge.
There is no need to imagine anything as things would not have happened that way, if so many people had invested in bitcoin so early then the price would have gone up way faster than the rate at which the price of bitcoin actually grew.
Also you are making the assumption that people would have bought at a low price and then still hold to these days, and this is not true, there are probably a lot of people which bought at the time and still lost money, and finally you talk about the great opportunity people missed by not buying bitcoin cheap, but buying bitcoin now still offers a massive opportunity for those which have enough capital and patience to hold their coins for a long period of time.