i also think that Realms like the Strip will naturally evolve like 
yahoo.  i would submit that there would be realms devoted to commerce, 
and since the RC/C controls registration, it would be possible to insure 
that all the static (or dynamic) objects were also devoted to commerce.
i am working under the concept that eventually vrml pages wont even 
exist, they will always be generated on the fly like CGI scripts.  (more 
of argument to include object classing)
i like this discussion...and i am trying to get more specific information 
about DIS, which covers alot of the distributed process management 
protocol.  (supposedly source code is available) they are aiming for 10k+ 
entities being handled at once with the next revision.