That= roads and bridges. You know it. You are a lying fuck.
You are not going to succeed on a lie.
No, "that" = the business. That's the whole context of what he says. He has wealthy people who support him and want to give back because they know they didnt do it on their own. He mentions a teacher. he mentions people who built the legal and economic system. then he mentions roads and bridges and then he says you didnt build that. And then he goes on in that vein.
No, clearly he means the businessman did not build his business on his own, that he had help from the US economic system, a teacher somewhere, or an infrastructure.
In a sense he is right. He is referring to things that are public goods. But he is wrong in the implication that wealth just happened, not because someone worked hard or was smart.
But nice try at spin.
No, You didnt build that will go down as Obama's one memorable statement his entire 4 years as president.