It's less than that—they provide the ability to call taxis from an app. You've been able to call taxis from phones for significantly longer, you just had to dial a number.
I know this isn't a common way to call taxis everywhere, but it was in some locations. I went to college in a small-ish city called Saratoga Springs. If you wanted a taxi, the expected method was to dial one of the local taxi companies. They'd arrive in a few minutes. It was a little more expensive than Uber and Lyft, but not drastically so, and while I'm sure a bit of that price difference comes from increased efficiency, I think a lot of it is just VC money.