I'm pretty sure MicroStrategy has some smart-enough people to think that sunk-cost fallacy isn't the way to go. It's simply just the fact that Saylor is really bullish on bitcoin, and the fact that you really can't predict price in the short-mid term — hence MSTR being down months ago.
They only can DCA Bitcoin if they have reserved capital for more investment or if they receive new capital from their investors.
They get big capital to DCA Bitcoin because they have big names in the list of top holders. Many big MSTR holders are Bitcoin Bulls.
Top 10 Owners of Microstrategy Inc and Top 10 Mutual Funds Holding Microstrategy Inc.