Why do educated people and so called "professionals" treat others badly?

I was flabbergasted to learn from my friend about a very sad and unfortunate situation where so called educated people who have good jobs are only concerned about themselves. It is only "me", "myself" and nothing else. The concerned people occupy an apartment on the ground floor of an unregistered apartments association and being the original buyers, they were allegedly given benefits like reserved parking inside the building, shops, etc. for which they have not being the maintenance fees (towards security, lighting, outside cleaning, paving, costs, etc.)

 To add to their worldly possessions they expanded their flat to take over common land to have their own personal "Garden of Eden". Their greed and selfishness did not stop there. They manipulated the system to have extra gardeners to look after their personal garden and waste water which was meant for the entire building. This resulted in the upstairs flats getting dirty, black water in the taps. When they were informed about the inconvenience to others, they did nothing to alleviate the problem other than to get the managing committee to install water filters at the well, but, this did not solve the problem of dirty water coming from the bottom of the overhead tanks.

Now, you would think that if these people were really wealthy, they would build their own villa and stay as bosses of their own domain. But, they want to stay in a housing colony and dominate the facilities, the watchmen, the gardeners, etc.

Now you be the judge of these types of educated people and you will wonder what good has education done to these people?