"Finding" a co-founder wasn't a choice for the uncountable husband-wife partnerships over the ages. Sometimes for better or for worse you're stuck with your spouse as your co-founder.

I remained in the corporate world for about five years after making the decision mentally to quit until I had confidence that both the technology and my own skill had reached a point where I could have a good shot at hustling a living with my wife as "co-founder." The article somewhat vindicates my decision.