The huge is the influence of "Logo". I have heard that in Japan, filmmakers cannot put any company's logo intentionally into the films because its influence is too big. For example, if Coca Cola's logo or products show up randomly in a movie, people are unconsciously made to want to drink Coca Cola after watching the movie.
Logos are the media for us as stimulus to buy the company's products. Talking about cloth fashion, especially Japanese people are obsessed with wearing and having "Brands". People mostly buy brands because they like its logo and style. Some buy them because they want others to see them as good as possible. Personally, I do not care about brands. I do not have expensive cloths or shoes, but the influence of logo is still huge to me too.