If you are the CTO of Microsoft you set up the world's largest patent troll after you leave Microsoft.

https://en.wikipedia.org/wiki/Intellectual_Ventures

I guess if you are a tech CTO, you don't beat them, you join them.

The sad part of Myhrvold's troll company is that it quickly spilled over into sectors other than software and "tech". Sectors that did not necessarily have the same knee-jerk negative reaction to the patent system (because despite its flaws, they depended on it).