This article assumes that Washio (or apps like it) will remain premium/luxury services. Like Uber that moved from Black cars to Pool and became a more economical way to travel (potentially becoming cheaper than owning a car and eventually even in the range of a bus), Washio may make the same journey down the cost curve.
The article also doesn't take into account the possibility that this kind of on-demand model may mitigate the need for a washer/dryer in the apartment (and UberEats mitigating the need for kitchens, Uber mitigating the need for Parking) which allows for more density and lower housing costs in urban environments.
Particularly in Uber's case - 30% of city traffic is people circling looking for parking. Also, a LOT of Urban and Suburban space is taken up by parking. Imagine all the reclaimed space that will result in cheaper housing or parks/human space.
(Link to article: “One Tweet Shows What Silicon Valley Really Thinks of the People It’s Crushing”)