Just a (design) question

Do you have any ideea why the webpages of some big computers company like Dell, [URL=http://www.hp.com/]Hp, [URL=http://www.fujitsu-siemens.com/]FujitsuSiemens, or [URL=http://www.intel.com]Intel are not centered? :q:
I there a rule that sais this way the site is more corporate? I`m guessing this guys have enough money to do their sites the way they want to. Why do they prefer the left alignment?

ps. I hope I make sense… :smirk: