When products/services “peak”

Inspired the Golden Age of YouTube thread, I was thinking about when is generally considered the best time for experiencing a product or something like a social media platform. Even something like a TV show/movie franchise. Of course this is going to vary based on the intricacies of the specific thing, but based on my own opinion and that I’ve seen of several others, I hypothesize the following to be the average “peak”:This is using the product adoption rate chart, which attempts to describe how “mature” it is in the market. Essentially meaning whether it is still attracting new buyers and users and helping to describe who they are. Once it has gotten as big as it likely will ever be, the product should have a core identity and can instead shift towards customer retention.
While the term peak may technically imply a more tangible drop-off rate, perceived experiences often have a way of reaching their zenith prior to dwindling growth. Therefore what I am predicting is that on average, the time at which a product or service is not brand new nor greatly popular will produce the highest satisfaction ratings. This interval would allow it to be reasonably accessible and have had the initial bugs worked out. Earlier users often tend to then become dissatisfied after inevitable changes as a company grows larger. Not to dismiss those who were the earliest innovators, as they may prefer that initial time when the product or service was new and maybe even felt special to them. This is a psychological concept not exclusive to one group however, with nostalgia easily causing one to remember the past more fondly than they feel about the present. Meanwhile later adopters cannot miss what they never knew, likely minding later alterations and even enjoy them.

A company who can respond to their customers desires successfully enough may not have a stark change in which “era” they are most celebrated. I believe that generally buyers and users will prefer the point in which they were adopters. Still, I’ve noticed the highlighted area to be a “sweet spot” in many cases. 

Thoughts? Are there any specific products or services you think align/do not align with this theory?