As I see it, here is the path for running Dragon on the Mac. You tested it on Big Sur and it worked and that was something I was personally wondering. Next on Apple silicon it should work just fine with Rosetta 2. If Apple removes Rosetta 2 in the future, then we head for virtualization. Will Parallels and Fusion have a solution for Apple Silicon? My guess is yes. So I think Dragon for the Mac will be sustainable for the foreseeable future.