You're right here. There's no cost saving in terms of licences in moving from CC3 to a "vanilla" XP network, if nothing else changes. You would however save the cost of a RM CAL if you combined this with moving to a much larger XP user base.
Originally Posted by webman
The real potential for saving is what happens when you upgrade your network from Windows 2003/XP to 2008r2/win7 because those CC3 licences won't help you there if you go with CC4.
Your investment in CC licenses will have been wasted.
In economics and business decision-making, sunk costs are retrospective (past) costs that have already been incurred and cannot be recovered. Sunk costs are sometimes contrasted with prospective costs, which are future costs that may be incurred or changed if an action is taken. Both retrospective and prospective costs may be either fixed (that is, they are not dependent on the volume of economic activity, however measured) or variable (dependent on volume).
In traditional microeconomic theory, only prospective (future) costs are relevant to an investment decision. Traditional economics proposes that an economic actor not let sunk costs influence one's decisions, because doing so would not be rationally assessing a decision exclusively on its own merits. The decision-maker may make rational decisions according to their own incentives; these incentives may dictate different decisions than would be dictated by efficiency or profitability, and this is considered an incentive problem and distinct from a sunk cost problem.
The costs of moving to CC3 have already been accounted for. They shouldn't influence future decisions, beyond any "upgrade" reductions in CC4 licensing due to any upgrade pricing vs. fresh install pricing being taken into account when researching the price of a CC4 upgrade.
There is a considerable cost in going vanilla from this, but then there still is a cost to going to CC4 - retraining, etc.
Do you use RM support? If not, don't pay for it. Just think of all the third-party software (and your time!) needed to replicate everything you already have included with CC3.
We estimate the cost to us, of going from CC3 to vanilla as part of our CC4 upgrade, as being x at the most (that assumed we purchased KACE tools for imaging, which we have now chosen not to do). Our initial estimate of the likely cost of CC4 was 2*x. RM's actual quote to do the upgrade was 3*x. As a college rather than a school we may not be a typical RM customer and we may not be typical of a lot of people here, fair enough. But the financial implications here were something we could not ignore.