Are entities like MicroStrategy good for BTC?

Recently i have learned that MicroStrategy owns 1/170 of all available BTCs. I have been thinking if they keep buying, eventually maybe even reaching 2/170 or more, doesn’t it weaken BTCs greatest strength: decentralization?

Of course it‘s good for publicity, seeing large firms and now even countries put in large sums of money. But a lot of BTCs value lies in it being decentralized and every whale centralizes it a bit. Do you see this as a threat to BTCs success or do you see this as a protection of value since if an entity, hypothetically speaking, acquires 50% of all BTC it will be made worthless since it‘s foundation (decentralization) does not hold up anymore? So the more BTCs really big whales hold, the less it can hold up one of its main promises, basically creating a barrier of how much entities can hold? I hope i‘m making sense…

I am curious for your thoughts on this.