Probably because of Larian's port of D:OS2 allowing for not only cross platform play but also moving save games between the Switch and the PC. There's also the port of Torchlight II, which Runic Games did a fantastic job of reworking the UI to work with a controller. Unfortunately, they never bothered to take that controller UI/interface and put that in the PC version. I could also mention DevilutionX, which is available for free, and is a source port for Diablo available for PC, Linux, Mac, the 3DS, Switch, Amiga(seriously), Android, iOS, PS4, XBox, XBox Series One, MiYoo Mini, Mac, and PS Vita AND allows for cross platform multiplayer and has a really great controller scheme. There's also OpenMW which is similar, minus the multiplayer, but available on PC, Linux, Mac, Switch, Android and so on. There's more, but you get the idea. That bar was raised a long time ago.