I think the total opposite. They should include non-active users. Potential changes could make then active users again, so it is vital to get their response. But I think they should have gone further and searched out potential users where possible. I gave a talk about Unity a while back to software developers who were not involved in games, but some were looking to dabble. There were a variety of reasons given for not trying Unity, some down to a lack of knowledge. There is the occasional forum post asking if it is possible to sell games made using Unity Free, there are a lot more who never get as far as asking. Asking potential users what they know, what products they would want, and how to present it could be very valuable. The survey questions would have to be a little different, but it is data that should have been part of the decision.