I can't believe HBO has a nearly 2 billion dollar operating budget! I wish I made that much
You and me both!
And it's been in operation since November 8, 1972 - that's almost as old as my parents
What do they spend their operating budget on?  HBO that is, not your parents.
They provide programming of original shows like Game of Thrones, along with movies and documentaries, plus even more
Yeah, Game of Thrones is extremely expensive to produce I heard.  Do you know how much they spend on that alone?
I'm not sure but I know they film in 8 different countries. That, plus the extensive CGI, must weigh heavy on their operating budget.
Do they film Game of Thrones in 8 different countries?
Yes! The U.K., Canada, Croatia, Iceland, Malta, Morocco, Spain, and the U.S. Lots of travelling!