I wonder if you normalise by the probability of starting a business the results will change. Meaning that if you are together with somebody - it is much easier

I wonder if you normalise by the probability of starting a business the results will change. Meaning that if you are together with somebody - it is much easier to start something, but when you are alone - you have to have conviction. So many of these non-solo founders might have not started business by themselves. This creates lower barrier of entry, and might cause solo founded companies look better. The correct question to answer is: if you have already decided 100% than you want to make a company, is it better to do it yourself or with someone else?