When you add more people to a project you tend to have to split up the pie a bit more. To make an effective partnership, this would only make sense if the pie gets bigger.
One person with complete control might have 100% of a very small pie
Two people splitting up that same small pie makes for a bad partnership.
For it to make sense to have a partnership, two people must make a bigger pie,then and only then does the partnership make sense.
For each person added to a partnership it’s important that the pie keep growing or else the additional people result in a weaker partnership.
Just something to think about.
Have a great day!