The demand for the sectors are moderate/high, with new businesses comming in almost as soon as I bulldoze abandoned buildings but then the cycle repeats. I have one city of 6,000 people yet the industrial and commerical centers keep abandoning buildings due to low workers (or more rarely, low customers). I'll get a nice city preplanned and districted out, start laying residential, get a lot of people then lay industrial/commericial (most/all low density) and whatever com/ind i lay immeadiately starts having major work shortage problems even if I have very few buildings. I'm using the cheat mode to just pracitice building cities, I keep running into this issue however.