I don't think Microsoft knows how to count.Sony, launch day: Eh, let's just call the OS version, 1.01.
And the system shall be called PS4, because that comes after 3.
MS, launch day: Eh, let's just call the OS version, 6.2.9781.0.
The next natural number after 360 is 1, so let's call it Xbox One.
What comes after 8?
MS: 10!
10!
Windows 10!