I don't know if there exists a proper antonym of "survivorship bias" but here is a nice "casualty" list of failed ventures from which plenty of good insights can be taken. https://www.cbinsights.com/blog/startup-failure-post-mortem/

I think that taking advice from those who failed is as important as from those who might suffer from a "survivorship bias". I am sure most of these failed startups initially followed Musk's (et al.) "impossible is nothing" mantra before venturing out into the market.