I see this said a lot but really there's no evidence for it.
I mean the biggest game this year is Monster Hunter Wilds and Capcom has said Steam is over half of that.
Monster Hunter Wilds is a smash hit across the globe, with an incredible 8 million copies sold in just three days. In the U.S., Capcom’s action game is the best-selling game of 2025 so far, and it’s PC in particular that’s dominating.
www.ign.com
Sure, it's $70, not $80 but are we really saying $10 is suddenly gonna make the difference? PC might give more options for people looking for discounts but it doesn't really have a base that's unwilling to spend on games.