Because the need for monitization is a limitation. Take a game. You can try everything, but once you dev it for money- the whole shit-circues enters the town- making you think about the audience, the payroll, your family - and all these things limit you. In a very real way. Every naysayer who is applauded at a companys meeting tells you the answer why open source sometimes is more awesome. Because capitalism cant - and is afraid of risks.

Free as in un-bound software.