Sounds like he's not comparing like with like: he's taking the greater reach of the tech industry and comparing them with a more restricted reading of the previous industry.

That isn't even the worst thing with this reading: we know that the availability of decent jobs is going down. If, as he says, e-commerce is pushing them up, he needs to demonstrate a previously unidentified force that is large than the development of e-commerce pushing in the opposite direction. I find it highly likely that such a force exists.