Possibility of multiple dotnet versions installed simutaniously

Currently, you cannot install multiple different (major) versions of dotnet at the same time, as there are conflicts with library providers (e.g. so:libhostfxr.so=0), but the existance of the dotnet --list-runtimes command suggests to me that is it possible to have multiple different runtime versions.

This would be useful for the stragglers which are still on dotnet6, but also for future programs that maybe require dotnet9.