You have a working OS! But you're logged out, all sensitive data is removed (safely overwritten with random data first), and you don't have the means to connect to the VPN or anything corporate (it was before zero-trust architecture), even at gunpoint. You can check your flight status, or look up a cafe nearby to eat, etc. But you have to go to a Google office in the destination city, identity yourself, and get the trusted bits restored on your corp machine. This, together with an OTP device, finally allowed you to reconnect to the internal network (and go check fresh memegen).
I do understand why all these steps are required. And they are good. But how should zero-trust architecture solve that? You‘re still authenticated what the core problem is.