In current times we judge ourselves more personal for our success and failures were in the past the case was often felt to be mostly controlled by circumstance and happen chances. The tragedy is the measurement of success and failure. The failure of a person to recognize a flaw in their character, the failure of a government to is people.
Tragedy though wrote for the common are not often written about them. Their reason for this is the fact that the purpose of tragedy is to create a feeling of catharsis but not envy. How could you not be envious then of characters written as kings , queens and wealthy well to do members of society that so often are depicted in the works then? The fact is that these characters are too strange to different from the audience. You can't envy something you can't relate to "When you can't relate to someone you don't envy them."( Alain de Botton, A Kinder Gentler philosophy of susses)
In today's society, we are made to believe that we all are able to achieve great things. We have " The spirit of equality combined with deep inequality".( Alain de Botton, A Kinder Gentler philosophy of susses) Because of this, we are made to feel as if we should all be capable of achieving great things. the senses of equality that we presented with leads us to be more envious. We see are selfs as comparable and therefore are more prone to envy than any other feeling.
So with the greater difficulty in creating a plot that consent invoke catharsis and the Newer more popular ways of pointing out injustices : such as satire. the popularity of Tragedies has decreased. With the idea of failure and susses being a personal fault we do not recognize others failure , tragedies without seeing our own. Therefore instead of that feeling of " glad, that could never happen to me." We instead compare and invoke a different type of self-thought such as that of envy.