You can buy a great house in Omaha for $150,000, a comparable home in the valley would run $2,500,000 or more. And yes, you can get a job in Omaha that pays well!
Unfortunately, many people now have to treat the valley as a stepping stone, it's a gauntlet to endure long enough to make substantial money and then they have to get out. Get rich from options or some other liquidation event, then pack up and move to a place where cost of living is vaguely reasonable. For many people, the only way to stay in the valley longterm, establish a household, maybe have a family with kids, and comfortably afford a generic "middle class" standard of life, is with a truly significant payout, the type of payout that would define someone as "rich" elsewhere in the USA.
I know this is uncomfortable and unpopular to discuss, and we're all very fortunate to even entertain such discussions especially compared to the hardships of most Americans and global citizens, but who in tech has not experienced this? Whether it's the enticement to go work in the valley for some theoretical payday, or the feeling you must leave once you reach X net worth otherwise you'll never be able to actually afford it?