“Partnerships” for Kingdom Building

1st Peter 4:10 (NIV)
“Each of you should use whatever gift you have received to serve others, as faithful stewards of God’s grace in its various forms.”

When a new ministry idea comes to me or my team, I often tell my colleagues to first research and see if what they are talking about is already out there and if so, who is doing it well. Why is Partnership so integral to successful ministry capacity building ?