Self Made is interesting. Does your family background have enough to cushion you if your startup fails.
It costs at least 20k a year to live (rent and food). You can gamble if you have 100k of funding, but that's setting you back a lot on things like 401ks and property ladders. If you have security from your family then shoot for the stars, great.
Same applies in many cases, it's not always as simple as how much wealth has been transferred from one generation to the next.
One example want to get a traditional 'good job' in London, lawyer, jouranalists, finance, etc, you need to take an unpaid internship and low paid start to your career for 5 years, all while maintaining London expenses. If you live with parents in commuterville you can do that, if you 're from Newcastle you're screwed. After 5 years of rent free living with parents you're £60k better off even with no cash injection, that's enough buy a house which means you're paying far less than renting, you start building your wealth.
But taht assumes you get the entry level jobs on merit, and not because of parental contacts, which happens a lot. Work experience at your Dad's squash partner's firm will get you rolling, yet wouldn't factor into your 'self made' list.
No man is an island, no man is self made. Those who 'succeed' do so through grit and luck and are often blind to their own advantages. Those that fail do so despite working hard.
The American dream of 'work hard and be rewarded' is bollocks. So much relies on advantages you don't even realise you've had.