The hard part of the multiverse is the business model. Features like dynamic maps are just that, features. If you have a business model that works you can bring all the tech features to play. If you bring the tech to play without a business model you just crater spectacularly. This is why Fortnite is important.
It may not be the feature list you thought the multiverse would launch with but in hindsight it will be the feature list that the multiverse did launch with.
For me, if the content is compelling, I'm paying a monthly membership. I expect the multiverse to pay content creators based on how much time I linger in their content.
Did HTML / HTTP have a business model? Or were they a platform upon which other things were built?
The business model for HTML/HTTP was and is advertising.
People initially tried subscription models for HTML content but it didn't work so everyone went to advertising based models. Observationally, subscription HTML content models have continued to not work (yes, Netflix, but Netflix is more about video content than HTML content).
It may not be the feature list you thought the multiverse would launch with but in hindsight it will be the feature list that the multiverse did launch with.