This "feature" bothers me a lot. When my girlfriend tries to play Planet Coaster from my account via the family sharing feature, sometimes she kicked off even though I'm not even playing a game at all! I think this is a big reason cloud based services like Steam are a step down from physical games with no reliance on internet connectivity. Truth be told my friends and I were doing fine before Steam existed, even if it meant sometimes needing to get friend's IP addresses and troubleshoot firewall issues to play multiplayer games.