Firstly - while there are plenty of places in the US to find houses with $150-200k mortgage there are rarely tech jobs on those locations (and the jobs that do exist in those locations dont pay the obscene salaries you hear of.) Of course there are always some exceptions (handful in Texas.) And if you get a job in some odd location, lose your job, good luck finding another one in the same down if you dont live in SF/SV/NYC. You'll also lose massive equity in the house you'll be fire-selling since sales fees/taxes/insurance/lawyers/inspections are ~7%+ all in.

In the center of tech-job-land (SF/SV), you're looking at a $1M mortgage if you have a family you dont wish to raise in a 640sqft studio. Part of what you're paying for is the pool of jobs and easy availability of work.

Secondly, I lived quite frugally in my early career. This is much harder 10yrs in...because those choices affect my children. What do I give up on? Braces? Health? Here in the US you get nickle and dimed on literally everything, and especially on healthcare.

Finally, you are missing a major hidden cost -- risk. Numerous tech jobs can rarely survive 10yrs. Often, you find yourself out of work in the worse economy finding a new job when prevailing wages are depressed. Tech isnt like government, or teaching, or medicine -- there are harsh cycles. Worse, in those cycles, often your company stock/options are also worth farless/zero.