It's all about price points. The crux of the problem is glanced in the last paragraph of the article "Imagine a robot that you could buy at Best Buy for somewhere between $2k and $4k." Right now, that just isn't feasible. For autonomous mobility you need components that qualify the following criteria: fast, quiet, safe, and precise. Unfortunately, such components just aren't affordable yet.
The revolution frenzy won't hit until your upper middle class income family can afford it.
The revolution frenzy won't hit until your upper middle class income family can afford it.