Darwin kind of talked about this in his book. That’s why he introduces the concept of “Natural” selection as a hidden force that develops as a fallout from the competitive nature of survival. In particular I recall that he discusses at length the selective pressure on pigeons by pigeon fanciers who bred their birds over many generations to develop certain traits that they wanted. He then went on to extend this idea and suggest that in the wild there is also a selective breeding process that occurs that has a similar effect but of course is not driven by the whims of people. In a very real sense selective breeding programmes do drive evolution within domesticated animals and plants. For really the same reasons. The most desirable traits drive success in breeding.