This article includes sales estimates for different handhelds from market research firm IDC.
They place total handheld PC sales of the Steam Deck, RoG Ally, Lenovo Legion Go, and MSI Claw at almost 6 million units for the past 3 years. It’s estimated that the Steam Deck makes up between 3.7 to 4 million of those sales, more than all the other major handheld PC manufacturers combined.
Compatibility is one thing and a heck of a important one.
The software and interface is great too. It’s not perfect at all. However, the fact that the power button suspends and resumes my games and I can just select from a menu and stuff. It’s a big deal. Like, I’m a programmer but I get tired at the end of a work day and just want to play some games without fiddling too much sometimes.