To the extent that the Rolex brand has a certain inertia that will propel it further even after the company ceases to exist, that inertia can be attributed to company's previous marketing efforts.
Indeed, the brand may retain value for some time even if the company goes out of business, perhaps even for a very long time. Nevertheless, that doesn't negate the fact that ongoing marketing efforts can amplify the brand's value and momentum, and the brand's inertia will be even stronger should the company cease to exist.
Another way to look at this is to put yourself in the shoes of a prospective buyer in 1923. Wouldn't you say in that situation you rely on the company's continuing marketing efforts to further the value of the brand? At what point in the last 100 years do you stop relying on the company's efforts?
Also, Rolex can easily destroy brand value with ill-considered promotional campaigns, so you rely on the company to not mess it up.
I think if you have to go a full hundred years in the past to make this point, we can probably agree that for any prospective buyer today the speculative value of their limited edition watch doesn’t depend on the company continuing to exist during their lifetime.
The 100 years isn't the issue here, nor Rolex in particular. Replace Rolex with a contemporary brand and dcolkitt's point stands even more clearly. There is nothing in the law that makes a distinction between a Rolex watch and some other brand that people may purchase hoping it will garner prestige someday through present-day marketing efforts. It would be absurd to make that distinction.
The salient point is many things may be purchased for "speculative profit you hope to make [...] reliant on the business", but that by itself doesn't make them securities according to the law, so it's just not the right test to use.
Indeed, the brand may retain value for some time even if the company goes out of business, perhaps even for a very long time. Nevertheless, that doesn't negate the fact that ongoing marketing efforts can amplify the brand's value and momentum, and the brand's inertia will be even stronger should the company cease to exist.
Another way to look at this is to put yourself in the shoes of a prospective buyer in 1923. Wouldn't you say in that situation you rely on the company's continuing marketing efforts to further the value of the brand? At what point in the last 100 years do you stop relying on the company's efforts?
Also, Rolex can easily destroy brand value with ill-considered promotional campaigns, so you rely on the company to not mess it up.