People put hard work into things they make, for example the People/Person who made this game.You guys don't need a petition or something it's just a game not real life.
So Calm down!
Except for most of the games on steam you have to also pay for certain characters you want or uncensored content or bundles. Some include different audio or music or sound effects you can pay for.
So if you buy this game on steam there is a chance they will include this to get more money from your pocket.