 IMAX had to agree to Disneys terms and conditions to gain the  exclusive first showings of the film. These included a limited  engagement of 4 months and 50% of the box office receipts. Its for  this reason that, when "Fantasia 2000" had its first run, not all  IMAX cinemas showed it as not all of them were prepared to accept  Disneys terms. The California Science Center in Los Angeles was one  such venue who refused to meet these terms so Disney built a  purpose