Why must community and business be mutually exclusive? Hint: they're not, and SO is both.
Not that there's anything wrong with that, just be aware that when you're participating on SO you're only a 'human resource', to be marketed and sold sometime later in the future. Hopefully SO is run by decent guys and the buyer will be ethical.
Now if you were to use "capitalize on", "monetize", or one of the many verbs that don't imply a transfer of ownership, then I would agree with you.