Why do I get the feeling that you only see DCA strategy to be only use by people who only have smaller amounts of funds, on the contrary it can also be use by anybody including the rich because DCA strategy doesn't limit people from accumulating with a certain amount because you can accumulate using any amounts of money you can afford, so of course both the poor, rich and successful investors uses DCA, perhaps it seems you draw your conclusion through the several discussions that was talking about accumulating with a smaller amounts, actually those advice was only for those who barely have enough money or source of income but in the case of those that are wealthy they can possibly use any amounts whether big or small so long as they keep up there regular accumulation they are okay.
Just like the saying goes, all fingers are not equal and you're entire savings can be someone's weekly experiences. Every investor buys at their own capacity. What Mr A might call lump sum might be Mr. B's periodic purchase.
So the deal is to buy at your capacity and reach your accumulation target, as long as there's still enough BTC supply to continue buying, the high capacity investor and life capacity investor are all doing a great job in their accumulation journeys.