Each of these television sitcoms has a wide range of distribution. Both of these shows are shown in America, UK, Pakistan, India, Canada, Spain, Italy, Japan, Korea and China. Friends had a fairly low budget when it first started at $70,000 but once it started to get record ratings (especially around the fourth and fifth seasons), they increased their budget. When the final season was in production the producers had a $12 million budget per episode, so a minimum of $250,000 million for just the tenth series alone. The Big Bang Theory had a fairly big budget in the first season compared to Friends. They had $750,000 per episode. Friends’ budget was gradually increasing until the final episode which cost the producers $20 million.
Sitcoms universally share a simular plot structure. The sitcom, has two or three different stories or plot points. Story A, Story B and Story C which are made to split characters into different storylines. The opening sequence of the show starts with all the characters involved in the plot line of story A. The opening sequence shows other or even all the characters in the show sometimes with the addition of guest stars.