[anyfactor]

I think my phrasing of "solo founder" was not very good. I should have used another word.

Zuck is not a solo founder at all but what happened to the rest of the guys. Some says Google is what it is today was largely due to Eric Schimdt's involvement who is not a founder. The idea that all co-founders hold large influence in the long run of the company is not true. However, there individuals who essentially established the culture, the vision and the framework of the company.

The idea is that within the original or pivotal executive board there are people who even though left the company still holds significant influence in terms of grand strategy or vision. And those people does not include all cofounders.