Same with Micro Strategy, as institutional investor, they have big capital to buy and they're ready to use leverages for buying bitcoins. It's dangerous double-edged investment strategy and even Michael Saylor said "Bitcoin is the end game", it doesn't mean Micro Strategy will never sell their bitcoins. It's very naive for thinking like this because no investor will hold their investment position forever.
While not the exact same situation, you could compare this to random Altcoins having whales suddenly putting hundreds of thousands of Dollars into a Shit Coin. The excitement of their whole Community is initially explosive, but it only lasts so long only to be followed by a sinking Market. Bitcoin whales are much different as in you need Billions to be one. Well. Do not be too excited about a whale, they are not planning to make any of us Rich but themselves.