Microsoft's Adaptive Controller is Already A Success With Fans (screenrant.com)
"By negotiating with Valve, Sony, and Nintendo, Microsoft was able to ensure that the controller operates with with other hardware as well."
Microsoft reveals Xbox Adaptive Controller for disabled gamers | E&T Magazine (theiet.org)
"I will never turn this into a Sony, Nintendo, Microsoft thing,” he said. “Anybody, literally anybody who wants to learn from the work we’ve done here – or even try to do more than that with the work we’ve done here – I’m completely open to that. It doesn’t have to have an Xbox logo on it. Let’s just allow more people to play."