I see where you’re coming from, but I don’t think that excuses anything. If you bought a hard copy with the understanding that a digital copy came with the purchase and now they’re taking away the digital copy, that’s still a Darth Vader “I’m altering the deal” type move.
Even if that was true, not all games have the same number of players. Counterstrike and dota 2 regularly top the most played list on steam, and are terrible with a controller. It shouldn’t be surprising that most sessions have a kb/m if that’s what people are mostly playing.