Is this a selection bias? 1. Users prefer Macs 2. Users also have Macs at home 3. Users choose to switch at work. This leaves number out employees on each p

Is this a selection bias? 1. Users prefer Macs 2. Users also have Macs at home 3. Users choose to switch at work. This leaves number out employees on each platform. One place mentions 200,000, another 277,000 "Apple devices" the article starts with 290,000 It's not really clear to me what how the two compare at the conclusions are shown but done if the data is missing Approximating from their total employee count (350,000) these do appear to be ~50/50. If this is accurate, 80% of IBM is using a Mac or 50% (depending on your which number you use) Is there another company using Macs at this rate (not Apple)? Given this: I'm curious why users are more productive and how to replicate that success beyond "buy a Mac"