That 5 day number was the bomb of that era. Outside Batman, few movies opened that huge and nowadays that range is considered a failure for a movie like IDR.
Disappointments nowadays opened in the 20s range. Robin Hood with its incredible leg went on to gross $160M+. NYSM2, Alice 2, Warcraft, Allegiant, Neighbours 2 could barely
manage to do $80M. Studios want a bigger chunk of the theatrical gross, bet on BluRay, cable, PPV