+1Can't speak for restaurant ownership, but I have two partners here at our engineering company. There are pros and cons. The main cons are: 1) not having ultimate say in any/ everything, and 2) splitting profits. The main pros are: 1) less time spent running the business versus doing real work, as the duties are split between us, 2) others can perform your official company duties when you are tied up with something else, 3) there are others who can kick in when cash flow is tight, and 4) where you have a big personal issue (serious illness, etc.), the others can keep things running and help maintain the profitability so you do not see much of a drop in income.