Anyone who will quit a job for something so minute as having a two year old laptop is someone that is probably so immature that they couldn’t handle the normal rigors that come from being a professional.

You may think so. When you see certain coworkers get new machines every 2 years but you don't, for example, it builds a power structure when one wasn't before. If you feel less valued as a result, I don't think it means you can't handle the "normal rigors" of being a professional. It means, if you can find somewhere else where you feel more valued, then more power to you.

Again if you can’t handle the “power structure” of not getting a laptop every two years, you will never be able to handle navigating life in corporate America.

If you're bringing in 3x your cost, you're getting ripped off and need to start raking those numbers back in.

Unlikely with a smart employer. Your cost to them is 2x your tc. They need a profit, that's where the last x comes from.

What would you say is a good ratio then?