Well, first off, you come off as bitter and spiteful. Need to tone that shit down. That said, a couple points/questions:
1. I would only move to the Seattle area if I thought I could roughly match my current standard of living. Given cost-of-living differences I'd need to make 15-20% more in Seattle for that to be the case. I say "roughly" because I consider there to be certain intangibles that favor Seattle. Namely, the ability to drive an hour or two out of town and be at Mt. Ranier or Olympic Natl. Park. My current mortgage payment + insurance is something around $1500/mo for a home that's comparable to the one you mentioned. To absorb a $4000/mo payment I'd need to earn $30k more per year. If I couldn't at least approach that then I probably wouldn't move.
2. Your home tripling in value is still meaningful even if you're not planning to move any time soon. Eventually you're going to move, most likely to a geography w/ cheaper housing, at which point you'll reap the rewards of that appreciation. This same phenomenon is happening in Austin too, so that's somewhat of a wash. I bought my place in 2003 for $240k; 13 years later its appraised at around $475k.
3. I'm curious why you're so derisive toward the newcomers who, because of housing prices, subject themselves to a long commute. We have the same folks here; they live out in the suburbs (because you get a lot more house for your money) and commute in to central Austin. It's a trade-off; you get more living space in exchange for a longer commute. Personally I'd rather have a smaller place and live closer in, but I don't begrudge them their decision.
4. I personally know some folks who work (or worked) at MS and they're good people. Perhaps you're painting them with too broad a brush? I'm willing to concede for the sake of argument that Amazon and MS have a higher-than-normal ratio of jerkwads per capita compared to other tech companies, but that doesn't mean everybody there sucks.