If i understand this correctly, this game was essentially a subscription to a game streaming service from the get go.
The switch is not powerful enough to render the game, so the game actually runs on a server somewhere, and the image is streamed to the switch.
I am not surprised at all that such a scheme is switched off after that short a period. Especially considering current datacenter costs, providing such a service is expensive.
The article does not say if there was an additional subscription required to play, but if not, i very much doubt that they made much money, if any at all, with that Switch version.
Now, the question is, how was that stated and explained to buyers of the game?
As a customer i can only say: Avoid games like these, if permanent availability is important to you.