Take the following classic factory pattern:
public interface IPizza
{
decimal Price { get; }
}
public class HamAndMushroomPizza : IPizza
{
decimal IP
When parameter count gets very high, I do think factory becomes less handy and redundant since the main point of it to make the creation process kinf of invisible.
Also, when the parameters are 'required', then I also think Builder loses its charm.
In this case, I may want to combine factory with a 'Parameter Object' which would reduce the # of parameters needed to be passed into the static factory methods and that could have made the creation logic more readable and neat than using a Builder. But of course, that parameter object is also needed to be created as well but at least it would be in one, single form across your application.