There is plenty of evidence supporting positive correlation between parental incomes/wealth and the child’s success in academic and commercial endeavours, but little evidence either way relating to success at starting a new business.
But given that the secret to successfully launching a business is to have enough resources to fail many times, it stands to reason that successful startups are highly dependent on founder funding (and thus, parental wealth).
This article links some studies related to entrepreneurship and risk taking based on family wealth, but I haven't dove into them thoroughly. Worth checking out:
I'm not disagreeing, but is there any research to support this that you can share, or is it based on your personal experience?