My story “Exploring Silicon Valley’s High-Tech Heritage Trail” on medium.com contains pretty much the same thesis but does include at least one “decent monument” at the former Shockley lab site. In the Technology Plaza behind 391 San Antonio, a 20-foot high silicon molecule sculpture towers over an IEEE Milestone plaque commemorating Moore’s Law. See: https://medium.com/swlh/exploring-silicon-valleys-high-tech-heritage-trail-e9a664c2d2b4