The problem is, in its current state, it creates monopolies which undercut the non-gig versions of those jobs, eventually blotting them out. And then the people doing them are left doing the same thing, generally for less pay, with little stability and no benefits (thank you, American health care system).

I tend to favor the perspective that the problem isn't tech but venture capitalists, and more directly the government that refuses to (or is too slow to) regulate all of this. It's the same old tricks people have been trying for 200 years of industry; anticompetitiveness, taking advantage of desperate labor, etc. The difference is that right now:

1) The markets can move (and even be created from scratch) so fast as to evade regulatory updates

2) They can dress it all up in flowery utopian language

That's a dangerous combination.