And you're defining "have a million dollars that you don't need to spend for 90 years" as not hard to achieve?

Doable for some, even easy for some, but for the vast majority of people.... very hard.

> start a trust

I'm assuming this plan kicks off at death, so your trust wouldn't need to spend much to maintain itself.

At which point you will probably need closer to 100B due to inflation, if the dollar is still relevant. Also you're likely dead.

If my math is right it would take roughly 120 years at a 2% inflation rate: 1 * 1.08^x = 1000 * 1.02^x

x=~120