Getting direct work done. Open-sourcing things is powerful, but it remains true that money is the unit of caring. When people really want something done, they have an institution with an office and employees that get the thing done.

What?

The Linux kernel is a prime example, along with plenty of other, impressive FOSS programs can't be summed up by "powerful". The general consensus with programmers was that "office and employyes" is less than adequate and often insult-worthy.