Valve’s SteamOS has gradually chipped away at Microsoft Windows’ dominance in PC gaming, but recent component shortages and price hikes have stalled the momentum, giving Microsoft more runway to defend its market.
- SteamOS usage on Steam rose from under 1% to over 5% since 2021
- Component shortages and cost spikes delayed Steam Machine launch
- Windows holds over 92% of Steam PC gaming market share
What happened
Valve’s SteamOS has made steady progress establishing itself as an alternative to Windows in the PC gaming space. Over the last five years, Linux’s share on Steam climbed to more than 5%, with SteamOS base distributions like Arch contributing a small but notable part. Valve’s approach focuses on running Windows games on Linux through compatibility layers, bypassing the need for native Linux ports. The company also expanded hardware support with official SteamOS compatibility on third-party handhelds and announced the Steam Machine console effort aimed at competing with traditional consoles and PC gaming rigs.
Despite this forward momentum, Valve has hit significant obstacles linked to broader industry challenges. Late 2025 saw sharp increases in chip, memory, and storage prices, driven by high demand from generative AI workloads that consume vast computing resources. This supply crunch coupled with lingering tariff impacts has made component procurement difficult and costly, causing Valve to delay the Steam Machine launch and forcing price hikes or indefinite delays on SteamOS-capable devices, including the Steam Deck and third-party handhelds.
Why it matters
The component shortages and rising hardware costs have undermined Valve’s ability to capitalize on the momentum SteamOS had gained in the fight against Microsoft Windows’ supremacy in PC gaming. Windows remains dominant with over 92% market share on Steam, and the stalled hardware rollout restricts options for users seeking non-Windows gaming experiences. This indirectly reinforces Microsoft’s position by limiting competitive pressure from alternative platforms that have yet to achieve scale.
Moreover, Microsoft's transition troubles from Windows 10 to Windows 11, which were expected to create openings for SteamOS adoption, have not translated into market shifts due to the hardware supply issues. As prices remain high and availability is limited, consumers are less willing or able to adopt emerging SteamOS gaming devices. This economic pressure favors established Windows-based environments, further entrenching the existing market landscape.
What to watch next
Valve’s ability to resolve supply chain challenges and launch the Steam Machine in the near term will be critical to whether SteamOS can continue to erode Windows’ market share. Price-sensitive gamers and hardware manufacturers awaiting affordable SteamOS devices will look for signals that component costs are stabilizing and that SteamOS-compatible hardware is becoming more accessible. Valve’s upcoming hardware refreshes or announcements regarding alternative partnerships could also shape the trajectory of this competition.
On the other hand, Microsoft’s strategies around Windows optimization for gaming handhelds, improved system updates, and ongoing support could solidify its dominant position if Valve remains constrained. Industry trends in chip manufacturing capacity, especially how much supply is diverted toward generative AI versus consumer devices, will further influence which platform gains ground. Stakeholders should closely monitor pricing, availability, and software ecosystem developments over the next months to gauge the evolving balance between SteamOS and Windows in PC gaming.