I get the risks of putting all eggs in one basket, but whenever people argue for competition using Epic as an example, a company that is demonstrably more anti-competitive and anti-consumer, it shows that they just think of the matter of theoretical ideals of evenness as opposed to benefits to the customers. I don't see any good coming from Epic having as much or more marketshare than Steam.
Unlike GOG which only offers DRM-free games, a substantial advantage compared to any other store.