That is not exactly true. My dad was a geology professor. About half his students ended up in oil and gas. The other half were employed as city planners, teachers, consulting geologists, and in , civil engineering firms, environmental services firms, mining and others.
But the founder is expected to use capital they don’t have to fund the business until it is attractive to people with capital. They are expected to market the product without marketing experience. They are expected to negotiate with people who are negotiating from a position of strength and who has much more experience. They are expected to be personally attractive to get interest from VCs. After they have gotten traction they are expected to be “coachable” and follow the advice of advisors that up until now have not been involved in the growth of the company.
The ecosystem is broken. Founders rarely get funding and when they do they end up losing most of the business they built. VCs are getting very few positive results.