You must be at least 'this' privileged to succeed. However there are a lot of people that are at least that privileged and most don't "succeed" either. And among that cohort predicting their chance of success cannot be done by simply looking at their relative level of privilege.

Also I feel like you just moved the goal for success. Getting 1 round of VC funding for your startup and getting your startup into the Fortune 500 or two wildly different levels of success.

If we're defining success as "1 round of VC funding for your startup" then, yes, I will happily concede the 'privilege' plays a much larger role.