This isn't really a "yet" case -- it's just physics. Even if you assume that this is all light speed and that congestion, routing latency, etc aren't a factor

This isn't really a "yet" case -- it's just physics. Even if you assume that this is all light speed and that congestion, routing latency, etc aren't a factor -- it's still impossible. You need to send your input (sensory and otherwise) to a server, then get a response, 90 times a second. That's 11ms round trip for the entire transaction. Light can only travel 2050mi in that time, meaning a maximum distance of 1025mi each way. And that's the easy part of this -- not to speak of the massive latency that video compression would add (at least 50ms), the transfer time of the data (if you go with a conservative 12Mbps bitrate and a perfect 50Mbit connection, that's another ~3ms there), etc. This would be possible if everyone had a VR render cluster nearby (<100mi) and no network congestion ever happened. Otherwise, not a chance.