The risk taken by risk takers (entrepreneurs) is disproportionate as partly expressed in the article.

Apart from financial risk, there is the risk of employebility once you are off the radar and are asked for references once you try to join the workforce.

For immigrants the risk of maintaining the status to stay in the country. This is perhaps a major reason why graduates go back to their home country to start companies.

Additionally there is conscious/subconscious biases at play when startups filter people based on "fit" which is to say "birds of a feather flock together". Hence it could be rather daunting for people from a different demographic to gain relevant experience which paves their way to a successful startup. Once the startup grows, they usually become more accepting in this regard.