Re: How on earth
[T]his whole notion of being so proprietary in every facet of what we do has really hurt us. And again, the management and vision we had encouraged that. Encouraged people to go reinvent the wheel out there our own way. And yeah, it might be 10% better but usually it ended up being about 50% worse because there are a lot of smart people that don’t work at Apple, too.
-- Steve Jobs, WWDC 1997