Back in 1995-1998 or so, Lotus 1-2-3 was the price of a mid-range computer and Wordperfect was about half that. People were seriously invested in them, in several ways.

I remember resisting myself as a kid the change from DOS to Windows versions of apps. Practically I was more productive with my memorised key combos and found it extremely annoying to switch. I also had an Amiga background that "workbench" and mouse point-and-click interfaces in general were meant for design and authoring applications but not for documents. Coming to think of it, I still feel this way - which perhaps is why I'm so naturally inclined to use stuff like vi(m)/emacs and tiled window managers.