No, Google is a less restrained than government. Google can limit your life a lot more than the NSA can.
The government has limits given to it by the constitution and laws. The NSA, by law, can't even enforce laws in the US, since it's a military organization and the Posse Comitatus act prevents the military from enforcing US laws. That's why the NSA could only tap foreign data centers, which is perfectly fine.
If foreigners didn't want to be tapped by the US, perhaps they should have done a better job of inventing the Internet.
Additionally, not only does Google have no such limit, they have access to governmental resources as well. The same authoritarian fears you have about Google exist with the government.
Really, in the side of Government vs. Corporation, the only side that represents YOU is Government. We liberal socialists know this key fact, and use that to our advantage. We treat government as part of us, and make it work for us.
Libertarians make the mistake of disassociating themselves from government, which is funny considering that government teaches you language, provides the roads you drive on, delivers your mail, and literally makes sure the air you breathe is safe.
We liberal socialists use government to limit the power of Corporations.
Without government, Corporations would, literally, have you as slaves.
Don't make the basic libertarian mistake of disassociating yourself from government. Libertarianism really is a sign of weakness, and only the poorest people are libertarians in this world.
Smart, richer, powerful people are always socialist liberals.
You libertarians only operate on the possibility of doing what you want. ("Freedom! Liberty!")
We liberal socialists actually do what we want.
Freedom and liberty are useless concepts if it doesn't actually provide you with results, such as health care.
Do not be on the side of the weak libertarians, that live in the land of theory.
Be on the side of actual, tangible results.
Basically at this point no adult should EVER be a libertarian. You might as well say you're a dumbass in public.