state-based licensing restrictions
See the following -
Uber For Health Won't Play Nice...It Will Sideswipe the Industry
By Kim Bellard | July 30, 2016
People talk "Uber for health care." After all, Uber has been wildly successful, valued over $60b, which makes it bigger than Ford and GM. AirBnB, the Uber of hotels, is worth some $20b. Heck, even the disposable razor industry has its own Uber, with Dollar Shave Club just getting acquired for $1b. Any industry that isn't looking in its rear view mirror for potential Uber-type competitors may find itself disrupted into irrelevancy. And, goodness knows, health care could use some disruption. There are no shortage of candidates for health care Ubers...