For point 2 of why: you don't need a co-founder you need an advisor. For point 1, it doesn't matter what they match skill wise if they are not putting in time

For point 2 of why: you don't need a co-founder you need an advisor. For point 1, it doesn't matter what they match skill wise if they are not putting in time. You are better off as a strategic partnerships in separate startups.