I would be cautious about drawing conclusions about startups
from this study. Startups are such a small subset of newly founded businesses that unless a study is very careful about
how they select their sample, they're likely to get mostly
ordinary businesses. And judging from what the people who did
this study say about how they selected their sample (see page 8),
it sounds like that's what happened. They say they "extracted
randomized records by region." Randomization is not the way to select a population who by definition are outliers.
Actually, the title I saw before the change (and now) said "Entrepreneur", not startup founders. I don't think it was misleading, though it's true that people could be substituting "Founder" for "Entrepreneur" in their heads.
I wasn't suggesting they should have conducted the study differently, just that if they sampled businesses generally rather than startups specifically, their conclusions about entrepreneurs don't necessarily apply to startup founders.