There is a wide spectrum between sending 3d models to web pages and The Matrix. There are 2 things going on here: 1) making gpu more accessible to the www 2) the headsets/glasses hardware. Everyone seems caught up on 2 when I think the more important thing is 1. I hope the future is to do 3d dev in www by default rather than depending on exporting a unity/unreal/etc thing. I can see www replacing a lot desktop 3d content creation apps if that came to pass.
Refreshing to see someone else realize this, the metaverse will arrive when WASM/WebGPU/WebXR is the dominant way of delivering immersive websites. Our startup is working on providing this support for exporting to the web for Unity and Unreal engines, so virtual worlds can reside inside the. browser.