There are two reasons why the field is focused on gaming and not productivity: fidelity and familiarity. It's hard to build high-enough fidelity into the hardware at a reasonable price point. And even if you did make VR goggles that were great for giant spreadsheets at $1000, it would be a weird enough idea that it would have to be
massively better than $1000 worth of monitors to get people interested.
In gaming, on the other hand, the unfamiliarity of the tech is not a risk but an asset, making the experience more novel. The fidelity doesn't have to be sufficient to overtake an existing process, just to support a fun experience. That's a more scalable business with lower technological barriers to entry, so that's where businesses are focused.
Same reason we had Pong before PCs. You might also see major tech advances in products for specific targets, like military use, medical, or advanced manufacturing, that then trickle down to mainstream productivity applications. But until they get the tech good and cheap enough, expect progressively better games!
In gaming, on the other hand, the unfamiliarity of the tech is not a risk but an asset, making the experience more novel. The fidelity doesn't have to be sufficient to overtake an existing process, just to support a fun experience. That's a more scalable business with lower technological barriers to entry, so that's where businesses are focused.
Same reason we had Pong before PCs. You might also see major tech advances in products for specific targets, like military use, medical, or advanced manufacturing, that then trickle down to mainstream productivity applications. But until they get the tech good and cheap enough, expect progressively better games!