Valve’s Steam Deck OLED and SteamOS have nudged Windows out of PC gaming’s grip, pushing Linux share from under 1 % to just over 5 % since 2021. Over 92 % of PCs surveyed still run Windows, a drop from 96 % a decade ago, underscoring the platform’s stubborn dominance for gamers worldwide.

Valve’s strategy hinges on making Windows titles run on Linux, bypassing the need for native ports. The company’s recent push included SteamOS support for third‑party handhelds and a planned Steam Machine, but supply crunches in memory and storage have stalled production, inflating costs for low‑margin devices in 2025 and beyond.

Microsoft counters with its Windows K2 initiative, aiming to trim updates, cut ads, and match SteamOS performance on integrated graphics. Xbox Mode rolls out to all Windows PCs, signaling a shift toward console‑style gaming. The effort could soften Windows’ reputation, drawing some Linux‑curious users back for a smoother gaming experience.

Despite Valve’s software gains, hardware delays mean the Steam Deck’s price surge and the Steam Machine’s uncertain launch leave consumers in limbo. With supply constraints tightening, only established players like Apple can still negotiate lower component costs. For now, Windows maintains its lead in the PC gaming market for the foreseeable future.