In big tech? One can pocket an avg 100k/year. Less in first few years, more later on.
That isn't "quit immediately and coast" money, but several times a juicy down payment in the bank and a guaranteed MINIMUM 200k USD/year for the rest of your life IS set for life IMO.
It is not several times a juicy down payment if you live where near any big campus. And a lifetime salary above 200k in tech is not a thing. Tech is riskier the older you get unfortunately.