Just thinking about it logically and you can see that it is. An angel has put signifigant personal investment into a project, they want to see it succeed both

Just thinking about it logically and you can see that it is. An angel has put signifigant personal investment into a project, they want to see it succeed both for themselves and for the entrepreneur according to their vision. In that sense it is a partnership. With VC's increasingly today its possible that the investment in the business is some type of metastrategy for their portfolio so they may not care if one particular business succeeds or fails.