It's a 13k lot a mile from Apples new campus. The person who bought it knows it's potential. Even if you make 10% of that initial investment you're still doing amazing.
Location, location, location.
Is there really? Can you quantify what an "incredible number of employees" is here? Thousands, 10s of thousands? Do you have a citation for that statement?
Why would so many people worth 10s of millions of dollar be competing for the same properties/ Also why are so many people worth 10s of millions of dollars still working at Apple?
Those (now rich) people still work at Apple, as do tens of thousands of other wealthy people.
Apple new campus is both huge and the "flagship". It means Apple top employees will work from there. It has a 12,000 employee capacity. There will be hundreds or maybe thousands of top executives, top managers and high-grade engineers. I'm pretty sure the compensation for those is very high.
For a publicly traded company such as Apple it wouldn't be options but RSUs and they are a percentage of you salary. And you still have to pay tax on them just like normal salary.
Just because the built a new large campus it doesn't mean that the majority of people there will be worth tens of millions of dollars. Very senior management sure, rank and file engineers - not so much.
But yeah, that has happened elsewhere in the Bay Area. (Zoning tends to prevent it, though, so there's an element of regulatory arbitrage.)
Though as you mention, zoning may prevent it. Some areas have 5,000 s.f. minimum lot sizes.
This neighborhood is probably the 5th or 6th best here. Los Altos same house would go for 3.5M, MV there is just 0 supply, Palo Alto would be around Los Altos, Cupertino 300k more expensive, only west San Jose/Cupertino border is comparable. Apple has been here forever. They have had their hq here forever and same with their 2nd and 3rd largest offices.