Nothing outside of like SV, finance, or being a doctor is probably going to get you $300k and above. However, you can do some important work and make above $100k in a fairly inexpensive area if you want.
What are some examples of important work with decent pay in an inexpensive area that a SV tech worker could be good at?
Compound interest is the eigth wonder of the world.
Knowing what will be profitable in the future is analogous to knowing what problems will plague humanity.
And investing for future profit equates to mitigating them.