I think we should also consider that Steam isn't the only PC platform. I bought Horizon Zero Dawn and God of War (2018) on the Epic Game Store, because there was a deal at the time I purchased them (I think something like $20 for each title, if I recall correctly.)
When I originally bought these games on PS4 I bought them used for like $20-$30 each, which didn't add to any total sales or revenue for Sony.







