at the time of their ipo, the user base was smaller. as your user base grows, obviously you need significantly more people to run the organization. when the us

at the time of their ipo, the user base was smaller. as your user base grows, obviously you need significantly more people to run the organization. when the user base grew (we'll ignore the insane chaotic ways scaling impacts technological needs) so did the needs of a significant existence in other countries, those countries laws, the societal and cultural impacts, advertising in other countries, etc...