Square footage of office space is a step function. You have to move office space whenever you outgrow your current office space. It's the move out and move in

Square footage of office space is a step function. You have to move office space whenever you outgrow your current office space. It's the move out and move in process that is expensive. That's usually why companies jam employees together. The space starts at 8x8 for each employee and shrinks over the years because the company can afford the incremental cost of adding headcount but can't afford the big cost of moving to a new space.