I met with a "seeking technical cofounder" who's initial position was 'my idea is so amazing that they will be very lucky to get to be involved, they wet surprised when I said they will likely struggle to find one. What helped the most when I reframed it as 'the programmer has limited capacity and your asking them to work for free for you for a year'. He saw it didn't seem like such a good deal when put that way.
It's not great. But turns out okay. It did become a passive income. (I know it's very rare to happen.)