It's not about giving 50% of your company, and in a case like that the co-founder would definitely not get 50% (or deserve it from a risk/reward perspective). I

It's not about giving 50% of your company, and in a case like that the co-founder would definitely not get 50% (or deserve it from a risk/reward perspective). It's about having a partner and teammate who helps you accomplish more than you could alone.