Also depends on what you consider 'startup success'.
Many of the startups we hear about being acquired doesn't really mean they succeeded. Only means the founders/investors were able to make a quick buck from someone willing to buy it.
It must be quite a 'hollow' success to cash out selling an unproven business model to some bigco.
The good news is that none of those things ensure a large funding round, and also that large funding rounds aren't needed for a startup to succeed. I don't think anyone would suggest that you shouldn't start a company if you can't check three of those boxes. But you probably shouldn't start a company that needs a $20m Series A just to have a shot.