This is actually bigger than just appeal. I now have almost as many games on Epic as on Steam. This means that I start the Epic Games Launcher almost every day to see if there's something I want to play. In fact I now run the Epic Games Launcher more frequently than Steam. This exposes me to their store and I have started buying games from them. Before Epic started their free give away, the launcher was in the same category as the other non-Steam launchers I have, like Uplay or Origin. Something I virtually never start except when to play a game that requires them (and even then I'm reluctant). This means I'm never exposed to their stores and never entertain the idea of buying a game from them through those stores - out of sight, out of mind.