Business types know that they generally work with others. This isn't really in dispute.
When Obama says "you didn't build that" & "somebody else made that happen", this is
entirely different from a more reasonable claim that we didn't do it alone. No, he was
dismissive with these utterly false statements. Of course, he later modified them to have
a different & more plausible meaning, but he nonetheless said something damnable.
Listen to his speech again. I can't post links to videos but I am watching one from July 16, 2012 which seems to be where you are pulling your quote from out of context and just harping on it. There is an argument to be made against what Obama is saying though but his core argument presented in that speech is pretty accurate.
Don't get it twisted though. I am not a huge Obama fan.