Some of these platforms are less closed than others. Steam, for example, will give developers "Steam keys" for free to sell on other platforms or through their

Some of these platforms are less closed than others. Steam, for example, will give developers "Steam keys" for free to sell on other platforms or through their own storefront. So a developer can sell on Itch.io which only takes 10% (IIRC), the customer can use their preferred game client, and Valve pays for the bandwidth. Can you imagine Apple or Nintendo doing such a thing? https://partner.steamgames.com/doc/features/keys https://partner.steamgames.com/doc/features/keys