Cameras and everything else. Nikon has historically been known for it’s design excellence for good reason. The company has a good record for producing the kinds of products that have done well. What’s interesting is that unlike so many companies Nikon hasn’t tried to diversify our of it’s strength in optical products. They are, though very good at what they do.
Nikon has been designing great products for a long time. I’ve posted about lenses before.
Of course exploring new markets is important as well.
Nikon has managed to keep ahead in design, engineering and marketing and as such has thrived by developing markets. In the lon run this has paid off in high level of company strength.