A term a lot of companies I work with use is LTR, or Life Time Revenue. Lets say they anticipate the Xbox One to sell 100M units over the course of 8 years, with an average selling price (ASP) of $30. That would give you 3B in LTR which the sales team would claim as a win today.
Some companies even pay bonuses based on this LTR number, despite the fact that it cannot be proven until "8 years down the road". Usually a LTR is based off of solid reasoning. Not just a random guess. Still a guess, but educated.







