I think you're being a little hard on Gassée. He held numerous high level positions at technology companies and worked on the Newton, BeOS, and other technology

I think you're being a little hard on Gassée. He held numerous high level positions at technology companies and worked on the Newton, BeOS, and other technology which while not market successes, were still influential. At one time BeOS was considered a contender as a replacement for MacOS.