I don't know if I qualify as one of the folks who
  "really operate the Internet", but I'd like to point
  out that we have customers who would like to have
  a readable, logical domain name and willing to be
  outside of ".com". Each of these domains seems to
  be well-thought out and I don't think they will be
  any shortage of users or candidate registries.

  If you need to know that there will be a registry
  for each new gTLD, then I'm willing to run any of
  them that cannot otherwise find a home.