I consider imposed physical limitations on a meta-VR space to be like DRM. It's an attempt to slap existing limitations of reality (scarcity, in the case of DRM) onto a medium that no longer needs it. Why should I have to take a virtual train to get from one VR space to another? Why should there be "lots" where people have to pay to get the best "locations" to put their VR space? It reminds me of the old GeoCities sites and the short-lived concept of neighborhoods, which failed to realize that people don't browse the Web by metaphorically walking linearly along a sidewalk, staring at each storefront in turn. We jump, we "teleport," and that's the strength of the Web.
You might be interested in the Janus VR (formerly known as Firebox) project: http://www.dgp.toronto.edu/~mccrae/projects/firebox/ It's an attempt at a sort of VRML-like markup for defining webpages with VR content. I've played around with it a bit in my Rift, and it's neat to have the discoverability of virtual browsing but without the constraints of physicality: links are just doors you can open into virtual spaces, and you can always pop open an address bar to go somewhere new.
In short: VR lets us transcend limitations in where we can go, but the Web let us transcend limitations in how we interact with the world. Individual VR experiences can be whatever people want, but a meta-VR system must take into account the simple fact that humans can now "teleport."
Here's a nice video that shows what Janus VR is like: http://www.youtube.com/watch?v=jva-855nLvM