The theory is that once the bitcoins availible on the market run out the value will go through the roof. Especially with countries now starting to collect them.
I know someone who made well over a million with a combination of bitcoins and Microstrategy (and then retired before 40). But it's probably to late now. These companies buying up loads of BC could also dump loads of BC. When individuals were buying them it wasn't really possible to crash the market.
it only takes one to rug pull, then others start to panic and the house of cards come down.