[wbl]

Plan 9 would have to contend with a huge install base issue. Remember academics had been using Unix freely since the 1960's and had a massive pile of code plus every machine worth mentioning. Plan 9 would be trying to catch up from a very delayed position.

[pjmlp]

Woah there, UNIX only reached academic world after UNIX V6, released in 1975 and its first Assembly version was born in 1969, only being released to the world in 1973.