So he was founding engineer of WebEx, build the team, build the product, but the product was not good enough because "of its older architecture, particularly a lack of usability, reliability, and video quality" !?! Wasn't that his responsibility as VP of WebEx ?
Once Cisco bought, it sounds like a lot of control was removed from his hands? New company (Cisco) didn't want to invest in what they thought was a mature product that serviced the market well enough?
I'm sorry you were downvoted for an interesting remark. It resonates with me that sometimes you are stuck within a structure that was created by you and need to completely change environment to be able to achieve new goals. Quite interesting point here.