Marketing costs money, the kind of crazy money that retailers cant afford. The whole ecig thing is stuck in a garage somewhere selling on the web. Kinda like Dell one time, Dell had the advantage of IBM marketing to coast on at first. Theirs no one with the clout to build a brand, not for a product that has the resistance that ecigs has. Think of it, cutting into a market controlled by big tobacco big pharma and offering something that is intended to only appeal to a diminishing market segment. Ecigs are designed to become obsolete. They are for ex smokers.
It sounds as if you are assuming that everyone who switches to an e-cigarette has the goal of quitting nicotine. Those who want to quit nicotine make up a small percentage of the vaping population. We are mostly made up of folks who are either *dependent on the beneficial effects of nicotine, or who just plain prefer to have those beneficial effects available to us.
Decades of research on Swedish smokers who switch to snus show that they have no higher risk of smoking-related diseases than former smokers who gave up all tobacco/nicotine use. They also have an equivalent life expectency.
So, if quitting nicotine won't buy me any extra years or life or reduction in physical disease risks, what would be my motivation for doing so?
*Nicotine improves the ability to concentrate, pay attention, some aspects of memory and memory retrieval, and helps to relieve depression and anxiety. About 1/3 of folks who took up daily smoking only experience a few days to a few weeks of problems in these areas and then get better. The other 2/3 took up daily smoking because they had underlying conditions such as attention deficits or depression. For this group, smoking functioned as a means of self-medicating these conditions. These are permanent conditions, so quitting nicotine triggers impairments that interfere with daily functioning--such as being able to perform our jobs without making mistakes. And, for us, these impairments only seem to get worse over time.
Some of the folks in the first group, however, like having nicotine available as a tool to be used in the same way that the majority of folks use caffeine -- as a little extra help to keep from nodding off while doing something mind-numbing...or to get the creative juices flowing...or to help with self-control in emotional situations.
Nicotine isn't intoxicating and doesn't cause cancer, lung disease, or cardiovascular disease. The anti-tobacco folks love to say that it increases heart rate and blood pressure, but forget to mention that this effect endures for an average of 20 minutes -- about the same amount of time that BP and heart rate are raised by exercising. Nicotine does not cause hypertension (chronic high blood pressure). The only harmful thing that has been definitively connected to nicotine use (via the research on snus) is that it can have an adverse effect on the fetus, so it is best to avoid nicotine while pregnant.
So I don't want ecigs that are designed to become obsolete. I'd prefer high-quality, long-lasting equipment.