When one company comes out with excellent features on their cars (like the adaptive headlights mentioned previously) it should not be suprising for other companies to take their ideas. They still have to go through the design process themselves, so they are not identical, just have the same basic feature.
And since BMW is quite often coming out with such new awesome features its almost given that they will be a very highly copied company. By the time other companies see BMW's ideas and begin to engineer their own products with those ideas, BMW has already begun putting their effort into new innovative designs.
Therefore, BMW = ultimate driving machine for a reason