I worked at a very Windows-heavy company until last year, and we were still on a very old version of Office when I left. (It was the pre-ribbon Office. 2005?) The reality was all the knowledge the employees had (not to mention their shitty macros) didn't transfer to the new version, so we simply did not upgrade.
The reason new laptops ship with a new version of Windows rather than Ubuntu is because people are used to fighting changes in their software, but they'll notice that they don't have "the real thing" when they buy a $13 Windows-only LED keychain charger and it doesn't work when they plug it in to their computer. Then they'll complain to their computer's OEM, and Microsoft will laugh evilly. (I don't really understand it. The amount of hardware I never got to work in Windows is approximately the same as the amount of hardware I never got to work under Linux.)
The reason new laptops ship with a new version of Windows rather than Ubuntu is because people are used to fighting changes in their software, but they'll notice that they don't have "the real thing" when they buy a $13 Windows-only LED keychain charger and it doesn't work when they plug it in to their computer. Then they'll complain to their computer's OEM, and Microsoft will laugh evilly. (I don't really understand it. The amount of hardware I never got to work in Windows is approximately the same as the amount of hardware I never got to work under Linux.)