Considering the origins of theatre in different regions of the world and its original functions,what was its purpose to the audience?

Considering the origins of theatre in different regions of the world and its original functions, what do you think the purpose was to the audience? If all “great art” has a responsibility to educate, communicate, and entertain, what values are present in early forms of performance?

Compare the videos of the introduction of :
House of Cards

and
Richard III

What similarities are there? What differences? Do you think these are a coincidence? Can you think of other modern television shows that have a theatrical approach to the way they tell stories? If so, what?