Elenarie: They try to make smart business decisions by letting people that they don't need go?
Starting with the "Head of Business Development"?
No, something is pretty fucked up in Valve paradise. Maybe they realised, that they earn money with selling and making games, not with some hardware, not with unlimited free keys for developers and business comeptitors(!) and not with Linux ports of really old games.
They don't get things done in the last time. Half Life 3? Source Engine 2? DOTA? Far, far away. Every digital retailer offers better prices (GMG, Amazon.com) than Steam (even during sales) and they just sells Steam keys, so Valve has to handle the "delivery" and pay for the Infrastructure...