Together, they are worth $2.9 trillion in market capitalization
HOW THEY MAKE THEIR BILLIONS
Each of these companies is pretty unique in how they generate revenue, though there is some overlap:
*Facebook and Alphabet each make the vast majority of their revenues from advertising (97% and 88%, respectively)
*Apple makes 63% of their revenue from the iPhone, and another 21% coming from the iPad and Mac lines
*Amazon makes 90% from its “Product” and “Media” categories, and 9% from AWS
*Microsoft is diverse: Office (28%), servers (22%), Xbox (11%), Windows (9%), ads (7%), Surface (5%), and
other (18%)
