I think it's great that smoking is decreasing in England, and I wish that it would continue to drop in the United States, too. There is absolutely nothing good that comes from cigarettes. Even if someone doesn't end up with cancer, they can deal with a lot of other problems.
They are, but this is not a bad thing. If they really need to stay afloat, and not simply fold, they will probably be able to start selling marijuana in a few years. Farmers in the south have mostly switched from tobacco to marijuana as a profitable, viable cash crop.
Yes, cigarette companies are doomed because technology is increasing in the tobacco industry. Cigarettes are a dying way to smoke since there are so many other ways to get tobacco into a person's body. It is a fading industry; plus, people are becoming more aware about the negative effects of smoking.
Industries fail on an ongoing basis. It is just the nature of economics. Cigarettes were once fashionable an sophisticated. They are no longer perceived that way and the number of smokers is steadily decreasing. It is highly unlikely the trend will reverse, and eventually the large cigarette companies will go out of business.