We can't. Zuckerberg's goal is to create a standalone AR headset. The Rift S was only ever a means to an end, as the mobile APUs of the time were not powerful enough. As soon as they were, they switched to making a standalone-first headset.
It's the same for Apple, BTW.
Of course, if customers would reject the standalone headsets and would prefer PCVR, then there would be commercial pressure to make mass-market headsets, but the opposite seems true. Customers mostly reject PCVR and prefer standalone. Simmers are the exception and a relatively small group that simply cannot provide the tens of millions of customers that a company like Meta wants.
This is why only niche companies like Pimax make PCVR-first headsets and why Varjo cancelled the Aero with no replacement and why HP stopped doing VR.
The future of VR simming is almost certainly going to be to either use standalone-first headsets, or to use products from a niche company like Pimax.
