The 30% cut was industry standard for digital distribution for years. Google, Apple, and numerous other players all took 30% as standard.
That being said, Steam hasn’t taken a flat 30% for years now - their standard agreement starts at 30%, decreases to 25% after the first $10m in sales, then decreases further to 20% after $50m.
Furthermore, Valve has done more in terms of providing services, APIs/libraries, and end-user features (all with no additional fee to the developers or consumers) than any other game storefront has. I’d say they more than justify their cut.
Industry standard by massive corporations synonymous with corporate greed. Boy am I glad the fee decreases after $10m in sales. That will go a long way with helping out indie devs.
It’s okay to like Steam because they’ve provided us with a good way of purchasing and playing games. I like Steam but we don’t have defend things that are obviously greedy.