A large company with stable growth can afford to lose and retrain 10% of its workforce each year. It's also a lot more difficult to get fired from a very large

A large company with stable growth can afford to lose and retrain 10% of its workforce each year. It's also a lot more difficult to get fired from a very large company, so some forced fat-trimming is often necessary. Twitter is not that big, and it's growth is not very stable right now. Any layoff is going to be a morale hit, and they're likely to lose some very talented people in the aftershocks. The last company I worked for laid off 25% of the employees, and within a few months another 10% had been poached or found other places to work (myself included).