Yeah, I think the big difference is that devs might actually [be the only people to] think those sound like interesting problems to work on, whereas making the world a better place through [equivalent jargon in niche logistics/tax/pensions etc] only excites a small number of people who aren't devs, especially if it's not that much of a technical challenge and the hypothetical moat is just sales and business logic. Which leaves money, and unless the founder with the business model hires rather than looking for tech cofounders, it's really only a possibility of future money for working unpaid on something they don't understand on offer...