[GlitchMr]

Realistically, I don't think they could have purchased either of those.

GOG is a rather niche store with a strategy contrary to Epic Games (in fact, there is this popular item on a functionality wishlist: https://www.gog.com/wishlist/site/do_not_get_bought_by_epic_...). For most customers, GOG is a secondary store mostly due to its DRM policy which I don't see a chance of Epic Games keeping if they were to purchase the store (if anything, due to Fortnite). GOG isn't really profitable currently, but selling it to Epic Games of all companies would risk PR and could cause skilled developers to leave CD Projekt. It wouldn't make sense for both Epic Games and CD Project.

Meanwhile, Humble Store does pretty well, and I don't think IGN is interested in selling it.