Obviously you need both, that's why I'm suggesting the focus should be on the biz.

I disagree that it's rare or expensive, it's quite the opposite. Most knowledge associated with it has little lifetime value and is constantly tending towards zero - a 5 year old code base that generates little income has a value of near zero or is a liability. You can hire an engineer for a year to build web apps, depending on country, for the price of a medium sized sedan.

that's also true. but at such an early stage it really helps if you do it yourself. you can and should hire later