An alliance is like a chain. It is not made stronger by adding weak links to it.
The number of businesses that fold due to bad partnerships is staggering. In some cases, they are charlatans, in others inept business people, and others find themselves unable to scale with any growth.
You don't want to move in with someone and find out that they don't have auto or health insurance. That's a rude awakening.
I don't want to say names, but there are certain companies I won't work with because of previous people they've worked with. I don't want to be put in the same category as another athlete that I don't necessarily think is a good role model.
My father told me, never have partners.
I have no problem selling ebooks for authors directly as an agent, but partnering with them is another matter.
Friends don't necessarily made good business or creative partners.