"- professionals are very demanding" My hunch is Professionals as users might also be a benefit as they will tend to put up with bigger learning curves if they

"- professionals are very demanding" My hunch is Professionals as users might also be a benefit as they will tend to put up with bigger learning curves if they see benefits in the end. Also professionals don't tend to care as much about look of the UI (harder to do without dedicated design resources) vs efficiency of using it.