There is no relationship between total head count and operating work load in most companies. Twitter isn't a factory. They don't need 8000 people to churn out widgets and every extra person means another extra widget they can make per day.
The marginal value of each extra employee is negative but you rake in so much cash from monetising all the free content users are making for you you'd be stupid not to spend it on wild ass bets.
If you have a product that takes 100 people to run but generates billions in revenue it is standard practice in public companies to just hire lots more people. It's mostly speculative in that you hope that one of those thousands of people will come up with something else that makes billions.
The marginal value of each extra employee is negative but you rake in so much cash from monetising all the free content users are making for you you'd be stupid not to spend it on wild ass bets.
If you have a product that takes 100 people to run but generates billions in revenue it is standard practice in public companies to just hire lots more people. It's mostly speculative in that you hope that one of those thousands of people will come up with something else that makes billions.