I don't agree with you that the lump sum method is only for the rich  because anyone can use that method depend on the prevailing circumstance. For instance, there are people that work on high see and spend anywhere between 3 to 6 months whenever they are on duty and when they are off duty they spend like a month or two on land and it varies accordingly. This type of people may be inclined towards buying using the lump sum method such that whenever they are on land where they have internet access, they can purchase with the amount they would have set aside for Bitcoin investment within the period they were on sea. This is just one instance because there are many instances that can make an average person use the lump sum method to invest in Bitcoin. Therefore, the lump sum method is not exclusively for the rich.

Every method is good and it depends entirely on individual preference to chose what method is ideal for him. So long as the basic ingredients of buying with discretionary income, holding for long term and ensuring emergency funds are kept are all in place, whichever entry method chosen is good. Just that the DCA seems to resonate with a lot of people due to its advantages.