RealTime World’s collapse was a big thing at the time, but they didn’t have any public money involved with them (that I’m aware of, anyway). 38 Studios does have a public money-backed deal, which is why it’s collapse will linger much longer.
And, if you want to add to the above, T=Machine thought that APB failed for a number of reasons similar to Tabula Rasa’ demise.
Somewhere in the distance, I can hear Shirley Bassey.
UPDATE 19 June 2012: I should have added another similarity between these companies was “thought things would come together if they just kept working”.