I am not sure of anyone else's take on this, but the following is just my opinion:
Especially since the recent ruling concerning ecigs, BT would be well-served to enter this market before BP does. Right now, the product produced by pfizer, the nicotine inhaler, has a cartridge very similar to the prefilled cartomizers that are so popular. As a matter of fact, the are almost exactly the same only lacking a method of vaporization.
BT has never pushed much for its smokeless, even though open smoking has been vilified for well over a decade. They were not threatened by the smoking cessation devices (Even the aforementioned inhaler) simply because they did not work, while oral delivery of all types had some social stigma. Along comes the ecig.
I am not sure how successful this device has been in the big wide world but the one thing that is evident just from these forums is that it is a viable alternative to analogs. Post after post relate tales of people smoking for 0-40 years who have never found a reasonable alternative before the ecig and find themselve completely analog free in what appears to be short order. The money shot being that the vaper can chose to attempt to remove the nicotine over time ... or not. It gives flexibility not found in any other nicotine delivery system out there. Light cigarettes used to tout lower tar and nicotine but that does not count if you are inhaling deeper and smoking twice as much.
BT CAN sit on the sidelines but I don't believe that they have been in business for all these years making stupid decisions. Maybe underhanded and manipulative decisions about its product but never stupid, all have been designed to keep the consumer in their court. With the ecig market growing, this is a golden opportunity for them since they have the means to meet all the stringent testing standards of the FDA. From all the converts I am sure that big tobacco has begun to feel the pinch. Lets just hope that in jumping in, they don't start playing with the chemicals and manipulating the ecig for maximum addictiveness.
My only concern is that if they do enter the ecig market, we will be vaping on THEIR terms without the flexibility and freedom we now enjoy. Prefilled carts with crappy contents which will outprice the product (sound like a current ecig seller?) and again drive those who successfully quit smoking back to the analog.
Again, all of the above was just my opinion.