Flip is not "extremely negative." It is a reality in many business transactions. As I wrote in my parent post the term "flip" carries a negative connotation, but the end result is that someone took on a greater risk than the other guy to buy into a business with the sole purpose to resell their share at a greater value. Anyway you look at it, that is a flip.
Further, flip is extremely negative. VCs who do this for a living don't get very far.
I remember being lectured repeatedly about this. "are you building a company or a burger?"
Your use of terminology gives me the impression you have gathered your understanding from blog posts.
Standard disclaimer: I am both an investor in a16z and invested in them. Along with a number of other firms on both sides.