I was reading this article - we have talked briefly when I was with my startup.
I feel compelled to respond - I have been with Synopsys for two years now - and I do not believe you can conclude what you did about Aart's impressions about startups in your article after a 30 minute talk. It is speculation at best.
The big three EDA companies have grown significantly in the past through mergers and acquisitions. For Synopsys - there is Nsys, ExtremeDA this year itself. Also Virage in the last year - to count a few.
So either we are acquiring companies we don't think highly of, or you could be wrong is your assessment. My unabashed vote is for the latter.