I can see this show up on Youtube (why not - under Google's control, and they want you to watch the ads on their official browser) and on banking apps. Initially. In the longer run, it either withers and dies, or it leads to antitrust action. I really can't see another way.
Exactly, absent all platforms except OSS operating systems like Linux.
Windows 11, with its required hardware TPM, can absolutely do this. So can modern macOS.