VC Firms Don't Back You, VC Partners Do
hunterwalk.com
hunterwalk.com
Guy Kawasaki lists this in his 10 Mistakes too, Item 11: Assuming that your VC will truly add value.
Venture capitalists doing their jobs owe their loyalty to limited partners. So long as things are going relatively well or there's reason to believe things are going to go well, their interests are probably aligned with yours. But when they diverge, don't expect disinterested advocacy on your behalf.
Sometimes entrepreneurs make life more complicated than it really is. A venture capitalist exists to invest money on behalf of limited partners, and to deliver a satisfactory return to those limited partners. To support that end, he or she will provide some non-financial support to the entrepreneurs he or she funds. There are limits to this of course, and an entrepreneur should never assume that this support will be there indefinitely.
When a venture capitalist pulls back his or her support, a discussion about alignment of interests isn't going to be meaningful. If your company isn't doing well (or well enough) or the fund has decided to double down on other investments, a heart-to-heart chat won't change that.
Given that many startups fail, and a small fraction supply the vast majority of a successful fund's returns, entrepreneurs who believe their interests are unlikely to diverge at some point are being far too optimistic.