I'm a non-technical founder (I have an engineering degree on paper, but have never been a practicing developer) who's starting out on his own. I disagree (or maybe, have an alternate viewpoint) with your first observation.
I don't think sales skills are completely fungible across domains. A great business seller may not actually be a great motivational/aspirational seller, and vice versa. So it's wrong, IMHO, to assume that just because you may be incapable of convincing a developer to join you, you will also be incapable of convincing a customer to buy your product.
That said, I'm facing somewhat the same issue myself - so they way I'm solving it is by (a) rolling up my sleeves and trying to build a bare-bones MVP/mockups using relatively accessible tech like Bootstrap, HTML, JS etc. (b) overcompensating for my tech shortfall by giving 2x of what I can in areas like marketing, customer interviews, alpha partnerships, fundraising etc., and (c) using (precious) capital to outsource the first version of my app instead of waiting for tech co-founders.
As I see it, it's Carpe Diem. There's no way I can earn serious developer cred in weeks or even months, so I might as well look for alternative approaches instead of moping around, wishing I'd followed the software developer road 15 years ago instead of the MBA one :)