I believe it. But for a lot of companies the standard playbook is everyone is replaceable and they probably wouldn't even consider meaningful change unless attrition hits a certain percent. They'd rather cut a new hire a fresh load of RSUs than refresh you to keep you from looking around.

Varies by company, but IME, bringing issues of pay and stuff up are often hit with the standard "we consider raises in November" or whatever arbitrary time period they've chosen. Then they're shocked when people leave.