If I sell you a video poker machine, I'm not obligated to allow you to install your banking app across my video poker machines.

If I sell you a general desktop computer and refuse to let you install any banking app aside from Bank of Evil, then I'm probably breaking antitrust statutes.

Playstations and Nintendos are more like video poker machines. Sure, they could theoretically run a bank app, but they're sold as locked down gaming only consoles.