No, but greed is.
No, search engines are the solution to massive amounts of content.
Greed isn't the biggest threat to democracy. Democracy (or any other form of government) is the solution to whatever set of behaviors are undesirable in the ungoverned.
It just needs to be limited. You can't have lassis-faire capitalism forever because the people who are most successful will change the initial conditions and it will no longer be lassis-faire. So you need some kind of control outside the free market. The free market alone is not corruption-proof in any way.
Greed is a correctly pejorative term for pursuing power and wealth beyond what people actually need to live well enough. Self-interest prior to reaching that point is not greed.
Capitalism is defined as private ownership of means of production and core resources. It doesn't inherently require greed.
I agree with your second paragraph, btw.