My current case study is the Food and Beverage scenario. In other games with this scenario I had gone Ranged brand as a cost effective way to promote the three classes needed for dominance; Beverage, Food, and Snacks. Product quality is low at the beginning of the game, and attempts to go Corporate will usually get hammered by high quality imported goods. And many of the products in the mega class, especially in the Frozen Agricultural products class, gain practically no benefit from brand. The quick response is to just not bother branding these and go about the business of the other three classes.
Going back to question why and when to use the other brand strategies, it makes sense to say that Unique brand is great for the early game, when you are trying to get a quick advantage on the competition. Range brand serves well in mid-game, when competition gets fierce and you have launched most if not all your products in all the cities. Corporate brand feels like it has more strength in endgame, when the cumulative advertisement spending has a chance to reflect in large awareness ratings, and when you are looking for every edge against the AIs. Also in endgame your quality has a chance to rise to the point where seaport products and your own lagging tech will not affect your loyalty.
The twist of this case study is pursuing an aggressive corporate brand campaign in mid-game, not endgame. It is now 10 years into the scenario, and I still do not have dominance in all 15 products from the three classes, which is the first sub-goal. However, my market capitalization is several times higher than required for this subgoal, as I have taken the 10 years to build up my manufacturing and distribution base. In about years 6 - 8 my annual earnings were about $50 million, but now it just pushed up to $250 million. Here is how I did it with Corporate brand.
Food products are a land hungry business. Most of my start up capital went into land, meaning firms with the smallest footprint possible (2 medium farms for the eight crops, 2 medium farms for the cattle/chicken products, and a string of convenience stores). Product margins are thin, freight is high, so there is little extra free cash flow for marketing. Which is why I went with spending absolutely none at first. The two marketing strategies to begin with were 1) paying the real estate premium for 40+ traffic areas in Downtown, and 2) keeping my prices very very low at the beginning. Once there was enough traffic and sales such that my Selling units were the bottleneck, prices went up until I was still competitive with the locals and any AIs in my market. Convenience stores have a fraction of the traffic possible of grocery stores and mega discount stores, but I can fit all 15 products required for dominance in 16 land grids using 4 stores. All my factories were also small, using a 2x2 land footprint. I started one R&D research 9 out of 15 of the products, 1 tile each, for 5 years.
4+ million Seoul was my base of operations for its low cost, 4+ million Paris was to be the premium value market, and the ~1.5 million markets of Miami and Warsaw were targets for the first expansion. Paris I put in a 3x(Selling-Purchasing-Selling) convenience store, a 3xprivate label warehouse, and just sold 3 high quality food products out of the local seaport. This generated profit for operations, trained my first store there, but did almost nothing for brand (you do get a few points of awareness over time even without spending on marketing). In retrospect it was probably a waste to relabel and better just to have a storage unit in the re-labeling warehouse. Because Seoul was going to experience many mistakes, it's loyalty would be negative for a long time.
So the first five to six years was used to bring all 15 products into production. No need to worry about dominance yet, just start new local manufacturing firms to keep up with demand. The next couple of years brought in new farms for the eight plant products and higher technologies, as well as starting all 16 retail firms needed to carry every product into every city. In the ninth year, my third round of research carried the salable product techs into the range of 50 - 75. And this is when my business started taking off.
The AIs had been heavily suppressing my sales with brand ratings between 20 - 80, seaport products with average 65 quality rating, and their own research carrying quality ratings of 40 - 60, but only in select products. By this time most of the seaport products had been played out on availability, and their sales were something of a house of cards. I had started putting a lot of advertising dollars into Miami in all three media, and did not realize because of the small population, my awareness had started to skyrocket. So an fascinating thing happened when I introduced a new product in Miami for the first time. Within seconds, the AIs pulled out of the market with any seaport products! I would see cases of going from 3 - 5 competitors down to none. But it made sense, because to get into a price war with seaport products is a waste of scarce product. My only competition was from other AIs who had entrenched in the same product with a high tech or brand rating.
Now that Miami has a 70+ awareness rating, that is going to be my high profit market as I solidify Paris and Seoul. We'll see how it goes. But I think Corporate brand will be the means to crush my competition once production completely catches up.
P.S. Looking forward to trying this strategy in the Fashion Venture scenario!