I know more than one person who's quit their day job, started up a business, made a few million pounds and then retired. They won't be anyone that you, or I suspect anyone else on here, knows. They are simply people I've worked with.
And that's the thing. The ones that become mega-famous are typically the ones who have been around for an extended period of time - either through having spent the time building a single successful company (Bill Gates, Zuckerberg etc), or people who become well known for starting up multiple companies. If Bill Gates had retired 4 years after starting up Microsoft, how many people would even know his name now?
Rather than trying to identify people who've famously walked away after a few years and comparing them to the number of famous people who didn't, a far better measure would be to find random 20 entrepreneurs who have only been doing it for a couple of years and see how many of them are still doing it, either with the same company, or with a new company, in 10 years time.
And that's the thing. The ones that become mega-famous are typically the ones who have been around for an extended period of time - either through having spent the time building a single successful company (Bill Gates, Zuckerberg etc), or people who become well known for starting up multiple companies. If Bill Gates had retired 4 years after starting up Microsoft, how many people would even know his name now?
Rather than trying to identify people who've famously walked away after a few years and comparing them to the number of famous people who didn't, a far better measure would be to find random 20 entrepreneurs who have only been doing it for a couple of years and see how many of them are still doing it, either with the same company, or with a new company, in 10 years time.