no linux support on those games right? then there would be no option to use linux.
Developing something for like Sony or Nintendo might be more OS agnostic in the developer's seat, but then it relies on the tools working on those OS's.
Windows is never really a choice, it's more "I choose X, which only works reliably on windows"
2. You probably notice macs more because of their uniform branding, compared to a mish-mash of different looking other laptops.
3. Is it not enough to watch and listen to a keynote without pulling out a laptop?
4a. Dual booted, is it running macOS, Linux, Windows, *BSD?
4b. Is it running a VM (or more than one)?
4c. Is it used as a very expensive terminal with SSH to a different *nix OS or a remote desktop system?
At various times, all those have been true of mine.
Strongly recommend reading this response by Terry Lambert on getting OSX to POSIX compliance.
https://www.quora.com/What-goes-into-making-an-OS-to-be-Unix...
The prevalence of MacBooks at tech conferences is in my experience a very US-centric thing. I rather associate ThinkPads with tech conferences.