when was the last time Apple came out with a truly low cost machine that was significantly cheaper than its regular models or competed in the low end market for computers?
The closest to that is the iPhone 5c which hasn't exactly been a huge success nor particularly cheap for that matter.
Yeah, it's only, what, the #3-selling smartphone in the U.S. right now.
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Motorola... Let me think...
They spun off their hardware business in 2004. Called Freescale. Then they split into Motorola Solutions and Motorola Mobility. Motorola Mobility was bought by Google. Motorola Solutions is what remains. A shadow of its former self.
Motorola in 2004 was not Motorola 1997. Which was most of the (missed) point (by the OP).
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PowerPC was developed by multiple companies (Motorola and IBM) which both were _not_ interested in the market that Apple was interested in. If you haven't noticed, Apple is actually developing ARM processors itself and is ahead of everyone else.
The AIM consortium developed PPC. Apple-IBM-Motorola.
They *all* had input into design, two manufactured, one didn't.