Thin line between Optimism and greed

A lots of talk these days on greed...media , politicians ,investors blamed anyone who wants to earn(more) money as greedy.Being an Indian myself I have been told to dream within my limits and being laughed at whenever I fall chasing a dream.We have to check our dreams every time whether its greed or optimism. Trying to classify greed and optimism from the things happening around us.we can come up with two scenarios

1. People who wants to make a change in society and in their economical situation by doing something good. An entrepreneur.They are heroes with a purpose. They are in a game where loss is definite if don't play it right. But they are not afforded to think about loss.Being optimistic is their mantra. The mind will not look at the worst case.In this race many fail some thrive and show a figure of heroism and optimism. Being in bad economical times talk about the fallen one..
From spiritual perspective the person could have lived better without an optimism. Did his optimism killed his dream? will the societycall it a greed. Society will not call it a greed but they will suppress their optimistic thoughts.

I can see a 85 year old woman optimistic of getting a date and getting married in America, is this greed? she is just trying to live better and happier.She might not be successful, but her intentions are good..being happier sophisticated and do what she feels good for her.

So optimism with good intentions are fine?
There is a scenario of "good to one, worst to another"..Hmm I have to write separately about this..

2. People who wants to just earn money. Whatever it costs? We know a lot about these sect of people We categorized them as bad and segregated them from society. But the normal man like me and other guy driving near to me in a nice suit has the same intentions to earn money(greed) by any means, suppressed deep inside due to fear of society. We cannot show our greed openly.
So banks and monetary inventors came up with different schemes and policies which can feed these people and in turn feed them.

These sub-prime, options, ponzi everything are the same. These are the options you have to earn without doing nothing. No sweat, no headbanging put money and the guy for who you give the money (banks or corporations) will do anything just to make profit for you. Anything in the sense to change government policies,depleting natural resource of a country, making slave workers in other countries, supply arms to spoil the stability of a region..literally anything for you. Now YOU don't have to take the blame for these bad stuff happening, because these deeds are hidden behind the schemes.

You do nothing, and you will be cause of some destruction and you act like there is no connection between you and these..and you want only profit..no way...this is greed and you have to pay the price and if you fall the society will not look at you as a hero, rather a greedy failure.