I love the analogy. But if I can pay $5 for that cup and know it's my freezer and I can grab it anytime, as opposed to $4 for that cup and I need to depend on things going smoothly with a stranger I'll never meet, it might be worth the $5. Of course, it would be a no-brainer if the cost diff was only a $1! I realize the price diff could be an important driver. A significant driver.
Fair point.
But then there are the downsides of ownership as well -- What if there is another pandemic and you're stuck with points you can't use. Or 10 years down the road, you don't want to take WDW trips every year anymore. Or global warming leads to Orlando being a truly miserable location in 10 years, etc.
So let's go back to the ice cream analogy -- Your local ice cream shop has been around for 30 years, they do good business. You have your tradition, you go get a cup of chocolate ice cream every Tuesday night. The price is $4 per cup. But they will let you lock in your next 20 weeks! You can lock in your next 20 weeks for $100! ($5 per cup). Now, it does protect you from possible price increases, though it's unlikely the price is going to skyrocket over the next 20 weeks. They are also guaranteeing they will put your cup of chocolate aside, so you don't have to worry about them running out of chocolate. Of course, they only ran out of chocolate 1 day in the last 30 years.
So, is it worth pre-purchasing, where you almost certainly will end up paying more? Yes, you do get
some benefit from the pre-purchase, but not much.
The point of pre-paying is almost always to save money. A discount almost always accompanies pre-paying. The only significant reason to pre-purchase apart from a discount is scarcity -- Buying a year's worth of toilet paper in the pandemic at inflated prices because it might run out!
So yes, if you truly don't believe there would be point rentals available, then scarcity is a reason to over-pay. But just checking the rental forum today, I see multiple people renting out BWV points (for 11 month bookings) for $16 to $18 per point.
If I can rent for $16 to $18 per point, it makes little sense to pre-pay $150 per point (plus annual dues). Even ignoring the time value of money, the break even point would be 17 years, so you'd only save money the last 2 years of ownership. When you factor in the time value of money, you end up at a significant loss by having purchased.
Basically, you can invest that $150 -- and spent the earnings on your
DVC annual rentals.
Under this scenario: Total cost of buying: Approximately $300 per point (purchase plus 19 years of dues -- (19 as 2021 is almost over, and contracts end Jan 2042))
Total cost of rent points: Approximately $150-$200.
Buying was twice as expensive as renting the points. Now, there are other factors such as the rate of inflation of point rentals, inflation of dues, etc. So this is a very very rough estimate.
This is also the dirty secret Disney doesn't want you to know -- It actually takes longer for DVC ownership to become a value than they advertise. When they talk about breaking even after just 8 years, etc, they are comparing it to full rack rate rooms. Not comparing it to renting points, not factoring in room discounts, etc. The real break even point is much closer to 15-20 years.