What companys are you referring to that do not stand behind their products???
Any company out there that only gives you a few month warrenty on there product. They stand by there product until it breaks. They sell you this great product but if it breaks in a few months nothing of your own doing just shotty assembley they wont fix it. Or they will only cover certain parts. Some great product. Thats why I am so thankfull to have a dad that showed me how to use my hands and fix it yourself! Why spend all this money on warrenties and extended warrenties when you have to fight tooth and nail to get things fixed and only certain things are fixed. Save your money buy some tools get on the internet and learn how to do it yourself!