You can build verses with anything, but something standardized and decentralized like the Web? Competition back then may have been possible, but it's daunting now when you have winner-takes-all corporations with Google and the Web, and Mark Zuckerberg with VR.
You could do it with Godot, but distribution is also important. I built a VR browser before that browsed standardized VR worlds, but control of hardware also felt important. Perhaps there was a long-term path to success there.
I wonder if it is possible to build a Verse on something like Godot, which is open already and has VR tools.