Apple's management has enacted a policy of not offering competitive compensation for top engineering talent. I've had multiple Apple managers express frustration with the company's inability to attract and retain top talent. I myself got an offer from Apple for less than half what three other top companies offered, and Apple was unwilling to negotiate.
This product cancellation and Apple's general product quality decline is the inevitable result of this short-sighted, penny-wise, pound-foolish strategy to keep payroll down.