You don't need to be rich to make something like that.

Any middle class family in USA or Europe can do that, they just need to go for a smaller house, not a second house for vacations or not so expensive cars.

I have seen that, parents investing money on their children instead of on other things. It is their money they got working and they could do with it what they want.

You are just envious. Flying gets cheaper over time and in the future with electrification is going to become even cheaper.