But there's some kind of inertia keeping those employees at FB for some reason. Why put in all the effort to leave for another company to get paid the same? Mos

But there's some kind of inertia keeping those employees at FB for some reason. Why put in all the effort to leave for another company to get paid the same? Most people won't do that. Engineers aren't going to start quitting en masse until their compensation is threatened (i.e. the stock irreversibly tanks). In order for that to happen, shareholders need to stage a massive sell-off, which won't likely happen soon due to FOMO.