[pandaman]

People by and large do not exercise loyalty to their employers. This is why companies pay "sign up" bonus, so people could switch jobs over a relatively small bump (otherwise you'd lose a month or two of salary, which would push you into a net negative for almost two years over a 10% bump), and why the bonuses/RSU grants vest on a schedule (so you always have some money to lose when you resign).

Companies that work on loyalty do not have anything of the above, as their loyal employees won't be persuaded by a bigger TC number. Their TC is not high and they are not public too. It would be bizarre for somebody who went to Google or other such company because of the TC (likely applying to multiple jobs out of school or resigning from the previous job) to expect loyalty from the employer.