Apple's innovations were more than skin-deep.
Since 1994 it had been using a microprocessor, called the PowerPC, that was made by a partnership of IBM and Motorola.
For a few years it was faster than Intel's chips, an advantage that Apple touted in humorous commercials.
By the time of Jobs's return, however, Motorola had fallen behind in producing new versions of the chip.
This provoked a fight between Jobs and Motorola's CEO Chris Galvin.
When Jobs decided to stop licensing the Macintosh operating system to clone makers, right after his return to Apple in 1997,
he suggested to Galvin that he might consider making an exception for Motorola's clone, the StarMax Mac,
but only if Motorola sped up development of new PowerPC chips for laptops.
The call got heated. Jobs offered his opinion that Motorola chips sucked.
Galvin, who also had a temper, pushed back. Jobs hung up on him.
The Motorola StarMax was canceled,
and Jobs secretly began planning to move Apple off the Motorola-IBM PowerPC chip and to adopt, instead, Intel's.
This would not be a simple task. It was akin to writing a new operating system.