Front-loading the costs *is* limiting the risk. That's the whole point of the exercise. If you know your "break-even"/payoff will happen in that shorter period, then it can only get better from there if your vacation habits do not change over a longer period. Conversely, if you use a too-long horizon to justify your payoff, then you are subject to an increasing likelihood that things will not work out the way you planned. For a luxury purchase like DVC that only pans out if your vacation habits don't change from (relatively circumscribed) expectations, that's potentially quite likely. My first timeshare purchase was just under six years ago, and while things have worked out more or less the way I expected, even I've had some unexpected bumps in the road along the way. But, my payoff point is in the past. At this point, it's all pure gravy. If I had to give away (or even pay something reasonable to dispose of) all of my timeshares tomorrow, I'd still be in the black vs. what I ordinarily would have spent on vacations.
To be clear, I understand risk calculations and their purpose. We don't use them in an estimated "cost to operate" prospective calculation, though. At least not in the manner being suggested (using a drastically reduced functional life span number). We typically use warranted life span or estimated useful life. A truck, for example, has it's purchase price added in to "cost to operate" calculations spanned out over it's first 5 years...because that's when it's warranty expires. In those cases, we have either a service contract OR a decent sized historical sample of functional life span on which to base that calculation.
It's not actually LIMITING the risk, in this case, though. It's limiting your perception of risk, or the perception of how you want your costs distributed, to determine your "cost to operate". Not ROI or break even..those are separate considerations. Which means it's going to vary based on use and long term planning....because there's no hard and fast (or historical evidence) supporting a specific time frame for every person. It's not cost accounting, where you're amortizing over a relatively defined useful life span (or taxable life span), with specific purpose or rule. We're relatively sure (based on history, planned capital investments at WDW, etc) that the product is still going to be functional and useful well after 10 years (or, in my case, 5 more years) after purchase. As a prospective analysis, for break even and ROI, I get it. You want those to be as short as possible, and "in the black" as quickly as possible, and 10 years-ish (less is better) would be the target I would aim for.
For figuring out a rough nightly room rate 5 years in (aka estimated "cost to operate")....not so much. Again, looking at resale values of the 2042 contract, it's obvious that the first half are probably going to be "more expensive" than the last half. So there's some adjustment that likely needs to be done rather than an even "divide" over 50 years. But it seems to be a lot less conservative than spreading the up-fronts over 10 years.
To me, it's an artificial, arbitrary, baseless front load in terms of a very conservative time frame when figuring out a rough nightly room rate. There's no reason to think 6-7, or 10, years is the sweet spot to spread those purchase costs over. Right? It's just a number somebody picked because they liked it. Why that number? Is there something concrete to base it on that I'm not seeing?
It's not really a depiction of actual risk, because it's not a depiction of actual use (or historical ability to use) of the product. Right? I understand wanting to be "in the black" as quickly as possible, and for ROI/oppporunity an break even, I'm right there with you. But rough nightly room rate? What am I missing?
Again,ultra-conservative risk adjusting for ROI and break even, I get. For a rough nightly room rate? Not so much.
But, even with a shorter window, and even under most reasonable opportunity cost assumptions, DVC (resale) can still be a smart purchase for the "usual suspects": those who tend to visit every year or so, strongly prefer to stay onsite, in at least Moderate but usually Deluxe accommodations, and expect that to continue for at least the next 5-10 years, give or take. Longer windows, ignoring opportunity costs, etc. are only necessary for those in the grey areas of "DVC is a good idea for me".
I've not ignored opportunity cost (except when factored into nightly room rate..that's valid but it's such a moving target it's tough to pin down prospectively and not retrospectively)..and my break even point wasn't long (8 years). Both of those were, and should be, factors. So I agree with (and have not said contrary to) all of the above.
But, again, that's not the same thing as roughing out a nightly room rate...which is where this spur of the conversation came from.