At this point, MicroStrategy buying BTC is like your uncle topping up on snacks after the party started. Dude’s already knee-deep in the chips.
Anytime microstrategy buys Bitcoin it always becomes a news and it is now getting boring, what this will mean is that microstrategy will keep on taking the major relevance in the Crypto-currency market, it's good right now because it is creating a buzzing for the market, but have you wondered what will happen if they started selling their Bitcoin.
What I do when I hear that this guys bought more Bitcoin is to think that it is good for them and focus on my business which is to try as much as possible to accumulate Bitcoin for myself too.