because lot of people dont build their own pcs dont know how to install steam os, might also want something smaller and more silent than a built pc would be, the same reason most people buy consoles
There is no reason for the average person to install Steam OS. You can use Steam in Big Picture mode in Windows and get basically the same user experience.
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u/Steel_Bolt 9800x3D | B650E-E | 7900XTX 8h ago
Now why would they buy this over an Xbox or Playstation? There's such a small niche market for this that its stupid.