How many of those organizations you named were VC-backed?
replyCisco, backed early by Sequoia.
reply3Com, raised $1.1M from three venture capitalists in 1981.
Sun, a Kleiner Perkins portfolio company.
UUNET, raised from Accel, Menlo, and NEA in 1993.
Netscape, backed by Kleiner Perkins.
AOL, backed by Kleiner Perkins.