My understanding is that Uber basically lifted the idea from queer people. They were tired of not getting taxis so they started a service called homobiles ( https://en.m.wikipedia.org/wiki/Homobiles )
Uber then did all the shitty capitalism things and become the huge money hole and exploitation machine we all know.
Airbnb also made the process easy it lead to rents raising by like 30% in some places .
So they have have some convenience and such, but on the whole they're probably a net negative.