Yeah, I was thinking that too! The stories from Metatropolis were sort of the polar opposite of the world of Snow Crash, where the only workers left worked on big government projects to unwittingly destroy humanity as we know it (or well, at least just the CS nerds)
I do kinda think this is the way of the future, though, whether we like it or not. Used to be that you got a job with one employer for life, and a 30-year mortgage to tie you down and help maintain "stability" in the economy.
But to some extent, that "stability" also prevents free market forces (snicker) from arranging things optimally... things change every 5 years or so, and your skillset could probably be put to use better elsewhere, hopefully for higher pay. So now that people have increased "freedom" to jump between jobs and employers, hopefully they're doing better work and supporting the economy better than if they had just stagnated at their first employer filling a seat.
Of course, people can and do bounce around too much... Personally I try to stick to each employer for a few years because it takes me at least 6 months to learn enough about their IT systems to reach what I'd consider full productivity enhancing and building new ones. Of course, unskilled labor needs less spinup time to reach full productivity.
But what I anticipate will happen (heck, most businesses are halfway there already) is that we'll just all become contractors, both skilled and semi-skilled workers. We'll all become full-time employees of a labor farm which will handle training and HR and benefits, and they'll subcontract us out to whatever corporation actually has money to do projects. The corporations working on projects just want to get shit done and don't care to maintain big HR departments and take care of their people. The contracting agencies just want to maintain their labor farms and negotiate the highest rates possible for the just barely competent enough employee in their pool. Yes, there will be a proliferation of middlemen, but on the plus side they'll be negotiating a higher salary for you since they get a cut.