The so-called “sharing economy” mediated by sites and apps like Lyft, TaskRabbit, Thumbtack, Postmates, Mechanical Turk, etc etc etc., replaces “consistent work for a single employer” with “an agglomeration of short-term/one-time gigs.” That doesn’t really map to the old-economy assumptions at all. And even relatively high-skill professions are now being nibbled at by shared-economy software; consider Disrupt winner YourMechanic.
I say “so-called” because, let’s face it, “sharing economy” is mostly spin. It mostly consists of people who have excess disposable income hiring those who do not; it’s pretty rare to vacillate across that divide. Far more accurate to call it the “servant economy.”