I think if you look at an ecosystem as a whole the. It has happened. Google is a good example. The actual enterprise has thousands of jobs but has created over a million. You have upstream hardware manufacturers and downstream developers. There is SEO, advertising, X-Prize, managed services, etc. If someone deleted google today the net loss to jobs would probably be well over 1m jobs.
It's a good point. I was also thinking SalesForce too, but then thought to myself "actually I know tons of former SAP people who now just work for SalesForce/partners and thus just shifting the jobs elsewhere". Selling CRM software in 2001 is not dissimilar to selling SaaS CRM in 2014.
I'm genuinely curious about YC's mission here and some examples. I'd love to position a concept towards that goal but can't quite grok it.