What a 30% storefront cut buys
A digital game sale is more than a file changing hands. Steam provides the storefront where customers find and buy a game, then delivers the download and later updates through its servers. It also connects purchases to player accounts and libraries, so customers can reinstall games without tracking down files themselves.
Those services solve practical problems for developers: they do not have to build a global download system or operate a separate store just to sell a PC game. Steam can spread the cost of that infrastructure across many titles and customers. The tradeoff is that developers give up a share of each sale—and access to the store’s audience and tools comes with dependence on a platform they do not control.
The split does not divide the work evenly
The percentage is easy to see; the labor behind a game is less so. Developers still create the game and generally remain responsible for its design, production, and ongoing development. Steam’s role is to make the finished product easier to sell, deliver, and manage after purchase. That can save a studio from building its own distribution machinery, but it does not replace the creative work or guarantee that players will discover the game.
The arrangement is therefore a bargain, not simply a fee for bandwidth: Steam supplies a ready-made route to customers, while developers pay for that reach with part of the revenue. A small studio can sell worldwide without running its own download network, but every sale through the store also reinforces its reliance on Steam.
