Actually you do indirectly, via Windows licenses, Office, Azure, Visual Studio Professional and Ultimate licenses, C# DevKit.
Also you are forgetting AOT first came with NGEN, .NET Native, commercial, and on Mono side, Xamarin had some price points for AOT optimiztions, if I recall correctly.
However this is a moot point, you also don't pay for GraalVM, OpenJ9, or Android.
