Never mind privacy and security, the activities of the US National Security Agency (NSA) could reduce the size of the market for Facebook. They could cost money. This is serious.
Zuckerberg recently criticised the Obama administration's surveillance apparatus. "Frankly I think the government blew it," he told TechCrunch Disrupt conference in San Francisco.
The Facebook founder was particularly damning of government claims that they were only spying on "foreigners".
"Oh, wonderful: that's really helpful to companies trying to serve people around the world, and that's really going to inspire confidence in American internet companies," said Zuckerberg.
And not just for Facebook:
Who said that? Neelie Kroes. And just because she's the European Commissioner for the Digital Agenda doesn't mean she's wrong. The activities of the NSA and our own dear GCHQ here in the UK raise two more big question marks about cloud computing, which already suffered from a lot of unanswered questions before Edward Snowden started leaking.
If businesses or governments think they might be spied on, they will have less reason to trust the cloud and it will be cloud providers who ultimately miss out. Why would you pay someone else to hold your commercial or other secrets, if you suspect or know they are being shared against your wishes? Front or back door – it doesn't matter – any smart person doesn't want the information shared at all. Customers will act rationally and providers will miss out on a great opportunity.
The Observer reminded us the other day that the cloud computing industry was predicted soon to be worth $200 billion worldwide. If Ms Kroes is right, then the industry can forget about $200 billion. It's just pie in the sky. No wonder Mr Zuckerberg is sounding worried.
G-Cloud (the government cloud) as the way to deliver public services efficiently.
Ms Kroes has had her say and Mr Zuckerberg his.
What do the G-Cloud people have to say? Nothing.
What is their response to the obvious problems with cloud computing? Silence.
"Oh wonderful. That's really helpful."