I just came out of a meeting about setting up a project management site for a new company I am working for using SharePoint. While listening to some of the problems they wanted solved with SharePoint, I knew it could be implemented easily with InfoPath. Then they asked me if it costs money and how much (starting at $199 a pop). For hundreds of people at a university, this is pretty much out of the question. So we will have to do what we can and not provide some functionally, easily.
I love InfoPath, I think it's an awesome product. But it will never take off until Microsoft releases a free "reader" so that most everyone can enter data into a InfoPath document. Do you think the PDF format would be very popular if Adobe did not release a free reader? I think not.