King James expressed his desire to sponsor Shakespeare's theater company and, furthermore, showed a desire to change the name of the company, which was done quickly. He also wanted to promote plays that told the story of Scotland, present his ancestors in a positive way, show the relationship between Scotland and England, portray the king's beliefs (especially those related to witchcraft) and emphasize his royalty .
Macbeth was one of the plays that were strongly inspired by the wishes of King James, who sponsored more than 20 plays per year.
Because poorer, unwealthy or immigrant families want to pursue the american dream and have a better life for themselves and their families. Also wealthy and political figures already have it all...get what I'm saying?