It is important to differentiate between composite developers (breeders) and composite users (commercial producers). Developing a composite requires a large population of females (25 or more sires per generation or approximately 500 to 750 cows). It takes a considerable amount of time to make the initial crosses, get through three generations of inter se (within-herd) matings and liquidate the original parent stock. Obviously, this represents a sizeable investment of money, time and patience. After all of that, there is no guarantee that the composite will be acceptable to the breeder or to the industry. In contrast, users are simply attempting to select bulls for their commercial operations just as they always have.
However, the potential user could have difficulty in locating a composite that fits the herd's specific needs.
Source: Michigan State University