Only because they don’t count the Switch as handheld. Nintendo was pretty much the entire handheld market.

I don’t know what would be left by how they lay out the numbers. Switch (2) is console, Steam Deck is PC. The Chinese “boutique” handhelds by Ayaneo, Ayn,… use existing game ecosystems (either PC or Android).

I guess Playdate and whatever Atari sells these days. Can’t think of any other dedicated handheld with its own ecosystem.