Recently, there's a lot of commotion in the PC gaming market over the Epic Game Store, a new digital-only PC games store and platform which is trying to break into the market. A lot of PC gamers are criticising Epic, the store owner, for being anti-consumer, because instead of providing some kind of benefit over competing platforms, Epic is simply using the large amounts of money they earn with their cash cow game (Fortnite) to bribe 3rd party developers to release their games as timed exclusives on the objectively inferior Epic platform, so they release first on the Epic store and then a year later on other platforms.
Now, some of these games have been marketed as releasing on Steam, the biggest gaming platform right now, as well as other PC gaming platforms, either through marketing material or through statements made on crowdfunding platforms used to fund the development of the game. For example, a game called The Outer Worlds, was clearly marked as releasing on Steam in promotional material. and as another example, the game Phoenix Point explicitly stated in the launch FAQ for the crowdfunding campaign on Fig(https://www.fig.co/campaigns/phoenix-point/about) that the game would be releasing on Steam and GOG.
To me as a non-lawyer, this seems fishy and maybe even breach of contract and/or advertising laws. Phoenix Point backers could have based their decision on whether to back the game based on the promised Steam release.
Does a situation like this constitute breach of contract and/or a violation of advertising laws? Note that while this is tagged United States, I also welcome legal responses from other jurisdictions given the international nature of the Internet.