Total console market comes to roughly $57bn in 2021. As per Statista PC gaming as a whole is $44.6bn. Now, tencent and NetEase have significant PC business too. That means Valve's revenue is less than $8bn, which would correspond to less than 1/5th of entire PC market. This suggests Valve's revenue was $3.7bn in 2017 (although citation needed). Now, how does a company that doesn't even have 1/5th of PC market revenue be majorly responsible for a secular growth of PC market?