The goal is to increase shareholder value. And most of the increase today was due to macro market trends and not due to the layoffs (everything went up today)
I know this is the "official" corporate governance imperative for a public company, but in practice this isn't how companies are run (or at least, not Google/etc). Sundar isn't thinking about "shareholder value"... he's thinking about how to make the company (and its employees) successful. Which of course, sometimes means cutting people loose.
that's certainly one way to see it.
another way would be: Google spent over $50 bill in the last 12 months keeping its stock price up artificially.
Quite.