"Tiering", "niching" and "market saturation" are common corporate tools in businesses and locations where there is high potential for high profit and high volume sales.

Tiering examples----well look at the US car market up until the last year or so. GM corporate put out Hummer and Cadillac at the top end, Buick and Oldsmobile in the upper bracket, Pontiac as the "niche" performance market, and Chevy and Saturn as the everyday working man's cars. Ford: Lincoln high, Mercury still upscale but not Lincoln, and Ford as the everyday man's cars. Even the Japanese 20 years ago got into tiering by introducing their upscale brands---Lexus= upscale Toyota, Infiniti = upscale Nissan, Acura = upscale Honda----all to compete with the high price portion of the market.

Market saturation can be seen everyday at professional sports events or in places like tourist traps and ski resorts where one company will park t-shirt and other tat vendors only a few feet away from each other on the same sidewalk corner to increase exposure to the fast moving crowd going by, or one resortwear company will place outlets(possibly with the same or different names) every couple hundred feet along the business district of a ski resort to maximize thier products' exposure so it is seen as being the standard of products available by drowning out its competition who may have different and possibly even better quality goods for sale, but likely at a higher price so they cannot afford to stock as much or offer as many outlets. There was one corner in Madison Wisconsin where two identical gas station/minimarts were diagonally directly across from one another at a very prominent and busy intersection, owned by the same owner, selling the same products for the same price, for the simple logic that they saturated that particular physical location while maximizing convenience for the customer, because nobody had to ever make a cross traffic(left in the US) turn to get into one of their two stores---it was always an easy right turn in as well as out, so not cross traffic to fight.

These are simple business principles and unfortunately are commonly seen in tourist areas becasue of the high traffic of relatively ignorant transient consumers with money to spend and wanting some keepsake of their trip, but not necessarily wanting to drop 300gbp on a custom fitted kilt that they have to wait 4-8 weeks for. So tat is what they buy, and because of that tat is what gets put out there, unless the local business and political groups band together to make an area a historic or restricted business zone, something not easy to do considering the tax income these shops bring into the locale and the other money brought into the local economy.