There possible many reasons for that. One of them (specially cars), cost is a real factor here. Normally some company develop a car framework and the other vend

There possible many reasons for that. One of them (specially cars), cost is a real factor here. Normally some company develop a car framework and the other vendors, buy it and just tweak it for its own market. Other point that worth to mention is that today, people are consuming same media, culture and having the same idols, regardless of their physical location.