In the absence of any definite rules, one must follow Bitcoin investing with a lot of objectivism, knowing that, haven’t accepted or gotten some ground rules of the project, it’s left for you to decide how you can grow or manage to build a portfolio to be something you would appreciate.
Those who are big investors basically invest with more money or formed money, but the person who is a small investor how to invest the accumulated money. That's why DCA method is the best and easiest method for both small and big investors, if you invest small amount regularly then your portfolio will be very heavy. The most valuable thing here is whether he has regularly participated in the investment.
Something that is there to understand is that,
Most of the big investors out there were already huge in the society before they dived into the cryptocurrency niche for Bitcoin investments.
Else, how do you hear about people buying up to a 100BTC if they weren’t already made in the society.DCA offers this same opportunity but with a less aggressive approach and one that spans through time. You get the chance to consider all options and be comfortable putting in just enough to grow your portfolio and grow through the process of investing with ease.
Well, talking of the statement I make bold, you need to understand that most of this guy's that bought a very huge amount of Bitcoin at a go wasn't that rich as you think, most of them bought very early, they are those investors that put their hard earned money on Bitcoin when majority of us doesn't even dare to take such a risk, and that is why they were the biggest benefactor of the magnificent growth of Bitcoin, because they took the biggest risk to invest in Bitcoin then, but if someone can buy such a number of Bitcoin today, then that person would have been an established person already in the society just as you said, because Bitcoin right now is way more expensive now compared to how much it was 10years ago.
Then concerning your next paragraph, yes it's true that DCA accumulating strategy offers the same opportunity to acquire and own a very huge amount of Bitcoin, but it's not a day job, it might even take an average salary earner 10years to acquire up to 100BTC, some might not be able to acquire such number of it due to poor salary, but that isn't a problem too me, the most important thing is continuity, as long as you keeps on buying without tempering with the ones you have already, with time, you will surely get there as long as you keeps on buying.