The point was, that with PE you are at a later stage of business (for startups usually pre IPO).

USV basically tries to do what MIT does with a fraction of the staff: Identify experiments worthwhile to pursue at earliest stages...judging by the quality of their "content marketing", I just doubt this ability. They are 1 generation VC with some lucky bets (prior to a market that matured) -- looking at their current portfolio, I wouldn´t be that bullish