For that specific case, I think a good analogy is Tesla cars and an add-on being the FSD package.It is a bit difficult to make an analogy as we're talking about an optional add-on to a product. The product itself is fine, and is improving over time with updates. In fact, it's the best selling product of its kind in history. The optional add-on, however, is causing some issues. For some people it performs well, and for others it performs poorly. Some people feel duped by claims made by the company, and others feel they got exactly what they thought they'd get. Some people feel the add-on is ridiculously overpriced, and others find great value in it. Some claim they would never have purchased the product if it weren't for the optional add-on, and others couldn't care less about the add-on and are just excited about the product itself.
I can't think of an analogy that fits... But I'm curious how this will play out in court. Based on previous comments from others, and the most recent court case that was detailed on these forums, my guess is that Tesla will be forced to offer refunds for the optional add-on, or compensation for the cost of hardware upgrades. I would be surprised and dismayed if courts force Tesla to buy back entire vehicles for anyone who purchased the optional add-on. If courts find Tesla to be in the wrong, the punishment must be painful enough to teach the company a lesson, but not so painful as to irreparably harm the company, which damages other owners who didn't purchase the optional add-on, or those that did purchase and are not experiencing problems with their purchase.
I can speak for myself in saying that I enjoy my car, and the optional add-on, and am having a great experience so far with the ADAS features. I would be just as upset as those who feel cheated if those features were removed or degraded on my vehicle because of their court actions. And that anger would be aimed towards Tesla and those people should that be the outcome. I think courts understand this and will balance their approach to this issue.
But if you abstract that to "not getting what you thought you'd get, because advertisement vs product", I believe I have a good analogy for you: Big Mac.