If you have any capacity for those things though, they're far easier to learn and practice with. It takes years to become good at building products, but I've g

If you have any capacity for those things though, they're far easier to learn and practice with. It takes years to become good at building products, but I've gone from almost no knowledge to being good enough to manage a product's marketing/advertising in just a few months. But I disagree, I think having technical skills is the most important part to starting a business. You can test as many things as you want before committing, you can build a project you're committed to for "free" (no cost out of pocket, just your time) until it's ready, etc. I don't want to understate the value of the non-technical roles, but I don't think you can overstate the value of being able to own the entire tech stack yourself.