He's not necessarily implying that. He's saying that the "set of employees" would behave better than the "set of contractors" that they'd have as an alternativ

He's not necessarily implying that. He's saying that the "set of employees" would behave better than the "set of contractors" that they'd have as an alternative. It does not mean that these sets would be identical, people-wise. The first set would contain different people, possibly with little overlap. That alone makes it possible to have a vastly different culture. We could argue about why the two sets wouldn't be identical, but some mechanisms seem obvious enough that I don't see the point in that.