> Funny, earlier today I just happened to see this Tokyo earthquake footage of skyscrapers swaying violently
It's unclear from your comment, so I wanted to clarify for other people who may not know: skyscrapers are intentionally built such that they sway, as that helps to disperse the energy more than a rigid structure.
https://www.youtube.com/watch?v=ACKMPD6MySs
Then, in the article, I read about San Fransisco:
"the issue of seismic safety of high rises was “never a factor” in the redevelopment plans"
I can not imagine any positive outcome here.