The Switch is a new Nintendo handheld device. It has the exact capabilities of the steam deck in the plug-and-play sense. (E.g. both come with docks that you can just throw on a TV and start playing with.) While mobile gaming has had an impact on handhelds, I don’t think that prevents the Steam Deck from seeing the success as a regular console.
There is a reason nobody makes the Vita 2 or a new DS, you can’t compare the market before capable smartphones with today.
Mobile gaming has shifted immensely, not even the perfect handheld can compete with devices already in users hands and more important pockets.
The Switch is a new Nintendo handheld device. It has the exact capabilities of the steam deck in the plug-and-play sense. (E.g. both come with docks that you can just throw on a TV and start playing with.) While mobile gaming has had an impact on handhelds, I don’t think that prevents the Steam Deck from seeing the success as a regular console.