Ancient-Red-Dragon: In 5 months Epic Games Store has already acquired many, many, many times GOG's entire userbase even though GOG has been here for over 10 years.
PaterAlf: How do you know that? I'm pretty sure that out of the 85 million userbase only a very small minority ever bought a game on the Epic store. Like somebody already said: The 85 million users are only there because of Fortnite and not because of the store.
Remember, nothing in this world is truly free. Someone, somewhere had to pay for it somehow. If you don't have to pay cash for the product, then YOU are the product.