https://thenewstack.io/50-years-ago-a-young-bill-gates-took-...
Perens had accepted a position as senior Linux/Open Source Global Strategist for Hewlett-Packard, which he describes as leaving Apple “to work on Open Source. So I asked Steve: ‘You still don’t believe in this Linux stuff, do you?'” And Perens still remembers how Steve Jobs had responded.
“I’ve had a lot to do with building two of the world’s three great operating systems” — which Jobs considered to be NeXT OS, MacOS and Windows. “‘And it took a billion-dollar lab to make each one. So no, I don’t think you can do this.'”
Perens says he later "won that argument" when Jobs stood onstage in front of a slide that said ‘Open Source: We Think It’s Great!’ as he introduced the Safari browser."