People who are very wealthy started their own companies. But their would have gifted their shares to trusts early on when the companies were worth very little.
You can also move to Singapore or Puerto Rico for a certain minimum time to sell your appreciated shares, tax free. Not sure if those places have estate taxes.
If you wonder if Ivy League is a good investment vs a UC, then you don’t need to worry.
In comparison, a lot of foreigners invest 1 million bucks in US hotels so they can get green cards and their kids can go to college in USA. They just park a min of $1 million in shares of a hotel that can apportion them 10 employees.[/quote]