[marcosdumay]

Try to close too early and any sensible customer will run away and never talk to you again.

"Always" be closing includes too early as well as too late, after the client has run away and you will gain nothing except to alienate him further.

[sanedigital]

Yes, a three-letter acronym is incapable of expressing every nuance of a complex interpersonal dance. ABC is about sales and marketing driving towards the close. It doesn't mean you turn a cold call into "Hi, my name is James, buy my product. This is what it does. Buy it. Do you want to know more? Buy it first."