https://www.gamespot.com/articles/playstation-boss-indicates-vita-2-is-unlikely-resp/1100-6453640/

The Nintendo Switch launched in March and it's been a big hit, setting sales records for Nintendo hardware. One of the selling points is that it's a hybrid system, allowing you to play at home on a TV or on the go with the tablet-like screen and controllers. Don't expect Sony to imitate that setup for any new gaming hardware it might be working on, however.

PlayStation gaming boss Andrew House told Bloomberg that, from Sony's perspective, a hybrid-style gaming system does not represent a "huge market opportunity" outside of Japan and Asia.