Getting an
MBA is beneficial because it sets you apart from the rest of the pack. One of the advantages of an MBA is that it forces you to read and learn, which helps you expand your knowledge about any business you want to venture into. I strongly believe that one of the reasons why start-ups fail is because they lack a solid foundation in understanding frameworks and conducting their own research, instead of relying solely on purchased data. While it is true that not everyone may be able to afford an MBA program, the truth is that there is so much to learn from it. If you had the opportunity to pursue an MBA before starting a company or directly starting a company, which option would you choose?
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https://producthq.org/career/product-manager/how-to-decide-if-you-need-an-mba-as-a-product-manager/I don't disagree with you and education is always beneficial. It's solid ground to build on but imho that's necessary needed for a company. But you are not doing everything by yourself, so you decide what's worth your time to learn, because you are not learning everything by yourself.
Let's say you are an engineer and invented something worth value, but you need to build business for it. At that moment you might not have time to spend 3 years of your life for MBA. As you have used your time to invent something extraoridinary. Good thing is that you don't need to do everything by yourself. You can hire a professional with necessary know how, like with accounting, branding, or find a business partners with skillsets you need.
Imho you need to focus on the thing that makes you valuable for the company you are building. Don't try to do everything by yourself as you most likely will end up making amateur mistakes that end up costing a lot.