I would raise a small round of VC, hire a salesperson, a customer service rep, another couple devs to keep the build going, and go all-in. Definetly all-in.
Life is short, don't look back at this later as your biggest missed opportunity.
Life is short, don't look back at this later as your biggest missed opportunity.
It sounds they're already (wildly) profitable. Presumably they can already afford to hire people to replace themselves, at least on the day-to-day.