I love this.
“Hi, we saw you just announced your awesome looking game on Steam. Can we ask you to break your word and release it with us exclusively instead?”
“No thanks, I do not want to break my word two days after announcement. Can I release my game with you nonexclusively?”
“Nah if we can’t use it to hurt Steam it has not meaning for us and we have no time to deal with you. Kthxbye”