Thing is, anyone working for money and also acting as a gatekeeper at distributing more money will have a conflict of interest impossible to ignore. Especially when the person is from a low-trust society, as facilitated by freelance sites. And, these people are better skilled at negotiation/bullshitting AND can work "cheaper" (or so it seems) so they will always have an upper hand in negotiations vs good ones, unless the client is deeply technical - but in this case, read above, he'll manage devs himself and hire them individually => no potential for a custom software dev company there.