Comment by GuB-42

> WD-40 themselves have come out with improved "Specialist" formulations that mostly just copy other, superior products.

We all know that there is something better for the job than WD-40, its value comes from its convenience, affordability, availability, brand recognition, and the number of cases where it is "good enough".

The "specialist" brand is what its name imply, specialist products, all of them better for a specific application, but none of them as universal as the original. The original formulation is not magic, but it is the one we are familiar with and it works well enough when you don't have anything better for your specific job.