That Daewoo thread brought this to mind. That company apparently makes everything under the sun, from cars to TVs to assault rifles. Similar thing with some of the Japanese manufacturers. So why not the US ones?
An easy answer is because they’re carmakers and you stick to what you know. But the 3 major US carmakers have been around for quite a while. 80 years or so. Their share of the relatively stable car market has only decreased in the last 40 years, due to every increasing foreign competition. Yet they are all publicly traded companies that have an obligation to grow sales. Most other big companies in this situation expand into other markets and diversify, because it’s the only way to get more money. Yet Ford, Chrysler and GM seem to stick to the car business.
Have they tried to expand into other things and failed? Have they actually gone into new markets that I don’t know about and succeeded (in which case this question is quite flawed)? Or what?