Rent should not be more than 1/3 of your income so moving to an appropriate place will let that person save an extra 2k a month. It would take a year instead of a decade to have invested 24k.
like under a bridge or something? Pardon the hyperbole, but you would have to assume people with no disposable income are idiots in order to suggest that solution.
Theres some exceptions, like rural doctors can make more more than city doctors due to high demand. But the less "physical" your job is, the rarer these exceptions become.
For software devs, you can move out of silicon valley. Maybe to Texas. And now those 1.5 million dollar homes are only 700,000 dollars. But your salary will reflect that.