That is false actually. All buildings start with a basic supply of the goods they need. If new deliveries can't get to them they will run out of resources and go bankrupt with time.
All one needs to do is place a cargo train terminal, just one and your buildings will never run out of goods.
You don't need yellow zoned areas. You don't need to extract oil or ore (well it only lasts a few minutes anyway before the ground runs dry) you don't need the pollution or education as industry simply does not work. Placing them, adding them, watching them, tracking them is a complete and total waste of time and effort. The numbers don't add up, the cims don't have to have a road, bus or train station to get to work nor do trucks have to pick up in a yellow zone and transport to a blue zone.
If one wants to have them for the look or feel or to pretend that yellow zones provide something well then that is a personal choice and fine. However all the charts (as nice as they are) and theories on how to do and what to do mean absolutely nothing to have a city operate and work properly.
I hope CO fixes this aspect of the game ASAP but as of right now, and I'm sad to say this.................
Industry in SimCity2013 works 1 million times better than it does in CS. At least in SC I had to a least have a road so that sims could get to work in CS that is just not the case.