Why can the Bitcoin (BTC) price increase be limited between $90,000 and $100,000?

Those running the Bitcoin options market on crypto exchange Deribit currently appear to have significant positive “gamma” exposure to the $90,000 and $100,000 exercise options. In simple terms, this means that traders/investors have been selling options at these levels, leaving the market makers, who are always on the opposite side, long a large portion of their positions.