I wouldn’t be surprised if they tried something like this but the only way for it to work long term would be for them to have a majority of global trading volume, a majority of nodes, and a majority of miners all on their side.
I don’t think they have anywhere close to that nor do I think they will be able to amass it even with all of the wealth they manage. It flys in the face of why bitcoin has any value in the first place so ultimately I think it will fail and the people that buy into their scams will get hurt in the process 🤷♂️.
Idk maybe I’m naïve but I just don’t think it’s a big concern tbh