The Mac’s contribution to Apple’s revenue has shrunk in the last two years, while the Surface’s share of Microsoft’s revenue has increased during the same time, data provided by each company shows.

Declines in the percentage that the Mac contributed to total revenue reinforced the complaints of some that Apple had ignored the personal computer in favor of the iPhone, by far the firm’s biggest money maker.

Those complaints climbed in number and volume following Apple’s introduction of new MacBook Pro laptops on Oct. 27. Since then, some long-time customers, particularly content creators in fields such as photography, design and software development, have lambasted Apple, charging that the new machines will not be powerful enough for their needs, and thus that Apple has deserted them.

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