XB has morphed into Microsoft's Kindle and is going to be around for at least a gen or 2.
I've yet to see a sub-model fail even though at first glance it could/would kill the established order.
By the end of the next gen, Sony will be offering a sub much closer to the value MS's sub has and Nintendo will be starting to add Gamecube remasters to the Nintendo-online sub.
Don't Play Stationary 4 ever. Switch!