On top of all this, the keyboard will feel more fragile and have more complexity. I prefer reliability over unnecessary complication.
That's probably true, but isn't its success in part driven by the deluge of Linux/Unix users who were thrilled to finally have a Unix based machine with a beautiful UI that ran on Intel CPUs? Also increased sales from word of mouth by those same ex Linux users telling their Windows using friends to switch?
I happened to use LC III Macs and was a developer back then.
A few years ago I did some work related to acquiring new customers, which required creating an iOS application.
None of those experiences had anything to do with UNIX, yet I am a developer.
Personally, the only reason I am not found of the new Macbook Pro is the price, as I rather have something like the W510's successor.
Objective-C frameworks for user space and drivers, use of distributed objects, designing GUI applications via Interface Builder, productivity applications like Lotus Improv and Virtuoso, the way applications were packaged didn't had much to do with UNIX culture as such.
And in fact AFAIK the standard developer machine at Apple is an iMac (which has an escape key on its standard keyboard).
A) Has been served by Apple in the past B) Provides value to Apple in the form of developing all kinds of software solutions that it's other users directly benefit from