I'd be interested to know what percentage of ex-Apple startups eventually produce actual goods or services which people pay money for, vs. what percentage of ex

I'd be interested to know what percentage of ex-Apple startups eventually produce actual goods or services which people pay money for, vs. what percentage of ex-Google/Facebook/etc. startups are just buzzword-bingo crap piles that collapse within the year due to not actually having any product or service.