How to Sell a Startup - Talk given by Paul Graham at PARC

I found an Upcoming event posting[1] that indicates this was given as a talk at PARC on May 4, 2005.

There are draft notes at the bottom so I'm not certain if this was the final version.

[1] http://upcoming.yahoo.com/event/18619/

Why would you want to sell it instead of making your startup grow?