As someone who worked in game dev in 2008, we loved Steam, for the same reason we loved the iOS App Store. We take it for granted these days but the ability to self-publish on a first class platform and receive 70% of the sales revenue literally redefined the indie game dev industry.

Use of the term ‘rent seeking’ is, in my experience, often correlated with a sense of entitlement and a lack of appreciation for what is actually provided. It’s only rent seeking if no additional value is added which is clearly not the case here.