Quoting just the last half of the abstract of this research backed paper:
We show that companies started by solo founders survive longer than those started by teams. Further, organizations started by solo founders generate more revenue than organizations started by founder pairs, and do not perform significantly different than larger teams. This suggests that the taken-for-granted assumption among scholars that entrepreneurship is best performed by teams should be reevaluated, with implications for theories of team performance and entrepreneurial strategy.
I’ve founded solo and founded in a team of two. Both went very well in terms of no-fighting and great long term cohesion. Neither went great in terms of revenue. (But I’m the common factor there so I shoulder the blame.)
What do you think? Solo or team?