8 GB on the Meta Quest is not a whole lot. If you are willing to use game development techniques and pay game development rates you can write games for it. But if you want something that competes with the web, if you want businesses to create experiences for XR on a routine basis, you have to get the cost down. Horizon Worlds' limited authoring model works holistically but doesn't let me import 3D models, doesn't let me use photographic content and would force me to learn an idiosyncratic authoring system to make content for a platform where nobody was there.
A device with 16GB or 32GB of RAM would take some of the pressure off and make content authoring easier but with current RAM prices that's a lot to ask for.