Epic Games recently did an AMA (Ask me anything) in the community Discord server, confirming that a Linux / SteamOS version of the Epic Games Store is coming.
On Steam you can, you request a refund (effectively just removing the game from your acc) and then your friend needs to request it as well for it to proceed.
On Steam you can, you request a refund (effectively just removing the game from your acc) and then your friend needs to request it as well for it to proceed.