Millions of people around the world consume everything from social media to movies to porn (so much porn) online, and it adds up to an enormous amount of data processed by tech companies. And that makes the tech companies a boat load of money.
Generally speaking, social media companies and search engines make money through ads, which are those things you attempt to ignore while browsing the Internet. The volume of search and social media alone is staggering: in 10 seconds, people create 500,000 Facebook posts, 57,000 tweets, and 46,000 Google searches.
This nifty chart from Visual Capitalist shows what that means in terms of revenue and profit for the largest tech companies: