Most people are just as motivated by greed as the business owners.
Fixed that for you. Greed (understood as the general desire for accumulation) is a human trait. To fault any individual or group for it is probably the wrong way of going about things.
We've got a number of "human traits" we've been actively trying to suppress and find ways to prevent from manifesting for... um. Millennium, I guess. Xenophobia (i.e. the root cause of a great deal of society-destabilizing bigotry) is a good example of that. Resource accumulation drive isn't nearly the worst of them (in the short term, anyway), but just because it's a natural aspect of the human animal doesn't mean trying to fix that is the wrong direction to take.
Desire for
excessive accumulation is more of the problem, though, and a certain amount of greed (in the sense you're using) is generally healthy because it's necessary for self-preservation. It's figuring out how to curtail the former that's more of the problem and a system more or less specifically designed to
exaggerate that feature, well... it's understandable how it can cause issues and how some folks can be a little leery about it.
This seems to be pure heresy to many Americans, but I kinda think people actually have a right to have food on the table, a roof over their heads, and some amount of medical care without having to go into huge amounts of debt.
...
I know, crazy talk, right?
Honestly, a lot of that derision for the unprivileged (i.e. poor, ripped off, etc., so forth, so on) seems to come more from a sort of "somebody else's problem" thing any actual belief in that sort of hardline position. Lot of people harping those lines are really loud about it right up to the point it hits
them, and then there's suddenly an issue.
I've heard someone relate it to a sort of societal level self-entitlement issue, iirc. "Obviously it's not a problem, because it could
never happen to
me (/my in-group). If someone else is in trouble, it's just because they did negative-thing!X, not because the system screwed them. They brought it upon themselves." Which is a position that helps dehumanize someone outside their in-group (and remember that bit about the human trait of xenophobia up above
), makes them feel better, reaffirms group bonds... there's a lot going on there, really.