What stands out to me about Gates and Allen is the serious technical chops. Writing an emulator for the PDP-10 and then an interpreter, line editor, I/O system all in 4KB of memory. The code is worth reading and in addition to that they had a very solid business sense and pretty serious work ethic for people who were 20 years old.
It stands to me in real contrast to the "fake it till you make it", "if it works you shipped too late" hustle culture that took hold of the industry, with entire products just being API wrappers. Really hope we see more companies that start out like Microsoft again.
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