Why couldn't Adobe do this on their own? They have the money to throw at smart engineers if they feel the need to. And its not exactly like a lot of what they

Why couldn't Adobe do this on their own? They have the money to throw at smart engineers if they feel the need to. And its not exactly like a lot of what they needed was completely undocumented; ARM and Mach-o binary formats, how to link against frameworks, etc. I'm not pretending that I would be able to do something like this on my own, but, its definitely possible for a group of smart people who have the right background to do.