MicroStrategy is still buying and has no plans to stop buying bitcoin this year, but that doesn't mean they will never sell their bitcoin. Just as blackrock has been buying bitcoin continuously since the ETFs were passed, they absorb all the bitcoin sold each day from Grayscale. Many people are excited because large funds continuously buy bitcoin on the market, making the supply increasingly scarce and the price of bitcoin will rise higher. But don't they think that one day if these large funds massively buy their bitcoins, what will happen? Like what Grayscale is doing, they sell large amounts of bitcoin every day, and for the past 2 days they are selling quite large amounts. It can be said that bitcoin's correction is partly due to Grayscale selling its bitcoin. So it was naive for many to believe that MicroStrategy would never sell their bitcoins.
There is a slight difference between MS and BlackRock: MS buys BTC using the money of MSTR stock investors according to MS's own plan. BlackRock accumulates BTC according to the demand of investors in the BTC spot ETF.
Although both buy BTC with the money of other parties, their nature is different. Similarly, when ETF investors sell IBIT, BlackRock will have to sell BTC, while MS can continue to hold BTC even if the price of MSTR falls due to selling pressure. However, that does not mean that MS will hold BTC forever.
We do not believe that MS company can exist forever, so we do not need to hope that MS will hold and buy BTC forever. Even if BTC can reach 100K USD or 1M USD, at some point in the future, I believe that we will have news about MS selling BTC.