[ekr]

I'd say just stick that $100k in a diversified all-world ETF, because putting it into some random's entrepreneur wannabe is unlikely to pay off (you'll probably not get anything back). Unless you're really wealthy, but then, isn't it better to just donate it to causes you care about?

If investment is what you're after, this approach doesn't seem likely to offer a good risk/return tradeoff.

I do have some things I'd want to start myself, some in those categories, but I'm more lacking time and energy than money. And a bit stuck by life problems?