"I know a guy who is a top engineer (self-employed) who used Works
(and apparently STILL uses it)."
I remember when Bill Gates was interviewed (via remote viewing) by a panel of journalists
and David Brinkley told him he was (still) using Easywriter and thanked Gates for
Microsoft making that. Gates denied it in his famous whiny tones and the perplexed
Brinkley pointed out that "Microsoft" was on the splash screen. Gates is a notorious
teller of quarter truths. M$ft bought the program from someone else and modified
it. Maybe he meant that. Maybe he meant that he personally didn't code it. But
his response did not rise to the level of plausible deniability because it was implausible.
Thinking back to a lecture on tape in my systems analysis class, some analyst said
there were 3 criteria for a successful program:
Does it work?
Does it satisfy the user?
Can it be upgraded?
Since Microsoft has often had file formats incompatible with Microsoft, it has often
failed on #3.