Third "Die Hard" had absolutely other ending. Why it cut out?

Throughout the most part of the 80th years at cinema almost indestructible Arney and Stallone dominated. Makkleyn from "Die Hard" was contrast to this trend — his hero had to overcome the fear and overcome some injuries to save situation. It is considered that the third movie of 1995 "Die Hard 3 became the best continuation: Punishment". In it Makkleyn and Zeus (Samuel Leroy Jackson) battle against Gruber Simon (Geremy John Ayrons), the brother Gruber Gans (Alan Sidni Patrick Rikman). The movie comes to an end with the final traditional for a series: Makkleyn forces down the helicopter Gruber Simon from the gun, the screen...