[aninhumer]

The table itself may be cheap, but the office space for it is probably not.

EDIT: Not that I'm saying it's not worth it, just that there are more costs to consider here.

[adrianratnapala]

That, and also the culture that says it's OK to just play ping-pong whenever you feel it is Ok to play ping-pong.

Well, maybe that is not expensive, but it is a big deal, and a company has to back itself to know that it will come out ahead.