confused_teapot
confused_teapot on Hacker News
Steam and its alternatives brought conveniences to the developers by providing easy advertisement, a streamlined way of delivering patches, an actual digital store to perform transactions, and also more recently started to serve as a major platform for the communities of many games.
I am not a game developer, but I guess that nothing that these stores provide is essential to publish a game and keep it alive, and any developer might simply put a site online, sell the game there, and allow me to pay directly to them. This is probably a niche opinion right now, but given any transaction involving digital goods such as e-books, music, software, games, etc. I am delighted whenever I see the content creator do this.
You may argue that this would limit the discoverability of games by a huge factor compared to them simply being advertised on the front page of some online store, and I agree, but I think if Steam had not grown to be as massive as it is today, that job would simply be delegated to the gaming magazines, forums, and many other independent platforms where the creators would more freely have a chance to promote their content.