Specialization & experience are good. So are more people. If finding a marketing or "business" partner for starting your project is your blocker, just learn it

Specialization & experience are good. So are more people. If finding a marketing or "business" partner for starting your project is your blocker, just learn it yourself. Sure you could get outcompeted but honestly, if one person gets outcompeted, in almost all circumstances so will 2 people.