I'm about to get downvoted to oblivion but the solution here is don't sell apps on Linux.
People on Linux don't pay for apps. Target a platform like iOS where users are willing to pay for apps. 85% of total app store volume across iOS and Android is from iOS.
People on Linux don't pay for apps. Target a platform like iOS where users are willing to pay for apps. 85% of total app store volume across iOS and Android is from iOS.