I was trying to illustrate that not every owner is able to just eat a loss like that. Sometimes I get the feeling that some people on this forum are disconnected from the idea that some people make sacrifices to afford the car. I suspect that you're taking offense to my statement because you're trying to attribute some stereotype to "people that have change just rattling around," where none was intended.
Since it was in response to myself, and I know we both respect each others point of view and no disrespect was intended, I wish to clarify a bit further - for you, and for others reading as well.
I don't doubt many people can't "just eat a loss like that" when it comes to an unplanned car swap. I also understand that some may be under lease obligations, company car policies or have other circumstances that prohibit an immediate swap anyway. But since the process of planning an early swap as a remedy to buyer's remorse was mine, let me underline the fact that the idea doesn't exclude those people at all. Everyone's budget and circumstance is different, but we can all be susceptible to buyer's remorse where product improvements are concerned (others more so, others less so). We may not be able to answer to such feelings in exactly the same way, but we all can plan within our individual limits just the same. The idea isn't different, even though the limits and the timeframe may be.
So this is the idea: If you feel bad about missing out on some features of a new car (be it due to an announcement or perhaps ordering mistake), it can be helpful to know you can fix that by swapping the car. The thought puts you back in the driver's seat of things, back in the game regardings those missing features. You are no longer an outsider, you are a future insider that can watch those things with interst, because they will get there one day too. Spec such a car for fun, go ask for a quotation from a dealer or two on steady intervals, keep up with the brochures and stuff as you would have when ordering the previous car. This process alone may help with the remorse and slow down the actual swap, because you can feel the option is there more concretely, than when you thought the option wouldn't be there for, say, a decade. The process will take time and time heals, meaning you might feel like prolonging the swap anyway. It will also help you map out where exactly your limits and options are financially. Perhaps the limits are different than one expects.
This is just one idea. It may not be applicable to all financial situations, let alone be helpful emotionally to everyone, but I'm putting it out there because it has been known to help. The other suggestion of mine was moving away from the information streams related to the products causing the buyer's remorse. That is another suggestion into a completely different direction that I think is pretty universal, no matter one's situation. It is best done once the order is locked in, but it can also be helpful later on if new interests and focuses help forget about the sour experience elsewhere.