Steam contributes a great deal to the games under their platform. They include all sorts of cool features like achievements, reviews, downloads, DLC distribution, Steam Workshop, user statistics, and other cool features on top of excellent marketing. In addition, Steam does not lock it's users into using just their platform. You can add non-steam games to your library and use other stores on your Steam devices.
In addition, Steam happily allows publishers to sell their games on other platforms and does not create 3rd party exclusivity agreements.
Personally I would consider Steam to be absurdly democratic in their distribution model.
In addition, Steam happily allows publishers to sell their games on other platforms and does not create 3rd party exclusivity agreements.
Personally I would consider Steam to be absurdly democratic in their distribution model.