Quest 2: 20 million (installs?) from oct'20 - q1'23, so lets say 2.5 years. (makes sense, Qualcomm said 10m in dec'21)
Quest 3 Sold an Estimated 900K-1.5 Million Units in Q4 2023.
Vision Pro is nice and all, but it's such a high price to pay although you're essentially buying a macbook pro. Still, in terms of revenue is still $1.4B for the quarter
I think the Vision is too expensive and has too little software support.