I recently heard an anecdote about how Steve didn't like the plastic screen on his prototype, only a couple of months before the phone would go on sale. So he said it would go on sale with a glass screen. There was no glass available in the market at that time which would work. Fortunately Corning had something in their research department which worked out perfectly. Steve's (unreasonable at the time) demand, ended up being the seed for gorilla glass being in pretty much every phone now. He didn't invent the glass, he didn't get in touch with Corning, he just got the right team put together to make his vision become reality.
He did and het got schooled on glass chemistry and composition.
https://www.fastcompany.com/40493737/how-cornings-crash-proj...