Premise - The new forms of entertainment take consumer spending away from other forms of entertainment.
Conclusion - The film producers have observed the video boom with
concern, knowing that every dollar spent on rental of videos means a dollar less spent on movie theatre admissions.
Prethink - Of the total 12% spending on entertainment, video boom is cannibalising movie theatre. But, the concern is true only if
1. The 12% does not mean much more in absolute now because of overall growth in the incomes.
2. Of the total entertainment spending, what is the proportion of other forms of entertainment. If X is taking away Y's consumers, the total consumers of (X+Y) grows because other(say Z) form is contributing lesser, then there is no concern.
(A) The cost of renting a video is generally substantially less than the price of a movie theatre admission.
This is irrelevant to the concern. What if the number of videos rented are much more than the number of theatre admissions. (B)
Most film producers receive a portion of the income from the sale of video rights to their movies.
Still the concern is valid. (C) Fears of some film producers that videos would completely supersede movies have not come to pass.
The concern will stay in this case too. (D) Since the start of the video boom, money spent on forms of entertainment other than videos and movies has dropped.
This says what Z's proposition in the 12% of entertainment. Even if video is cannibalising the theatre , there is no concern as other forms are contributing lesser in the entertainment. (E) Some movies that were unprofitable when shown in theatres have become successful when released in video form.
The profit on some movies still let the concern continue that the videos are cannibalising the theatre. IMO
D