Mark Zuckerberg Slams Apple's CEO Over Comments About CustomersFacebook's co-founder has come out swinging against a letter written by Tim Cook criticizing ad-based businesses.

ByGeoff Weiss

Opinions expressed by Entrepreneur contributors are their own.

While Facebook and Apple might not look like direct competitors on the surface, that's not stopping Mark Zuckerberg and Tim Cook from engaging in a war of words with regard to their respective companies' varying business models.

In a newTimemagazine profile, an irritated Zuckerberg is slamming Cook for a letter he wrote regarding Apple's evolving privacy policies last September. "A few years ago,"wrote做饭的时候。”users of Internet services began to realize that when an online service is free, you're not the customer. You're the product."

While the jab was probably directed at Google, whom Cook has previouslycalledApple's chief adversary, Zuckerberg came out swinging.

Related:'I Am Not a Cool Person': Our 5 Favorite Takeaways From Mark Zuckerberg's First Public Q&A

"A frustration I have is that a lot of people increasingly seem to equate an advertising business model with somehow being out of alignment with your customers," hetoldTime. "I think it's the most ridiculous concept. What, you think because you're paying Apple that you're somehow in alignment with them? If you were in alignment with them, then they'd make their products a lot cheaper!"

Earlier this year, CooktoldCharlie Rose that he sees Facebook as a partner rather than a competitor, being that Apple has no foreseeable plans to enter social networking, and that the service is baked into iOS.

Nevertheless, this latest skirmish illustrates that, on a quest for global domination, the fiercely competitive spirit pervading two of Silicon Valley's most successful companies can even turn allies into enemies.

Wavy Line
Geoff Weiss

Former Staff Writer

Geoff Weiss is a former staff writer at Entrepreneur.com.

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