Vertical Integration and Market Foreclosure in Media Markets: Evidence from the Chinese Motion Picture Industry
Why this work is in the frame
A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.
Bibliographic record
Abstract
This paper investigates the impact of vertical integration and market foreclosure in media markets. Using theater-movie-day-level data from China, we show that integrated theaters charge lower prices, enjoy higher attendance, allocate more screenings, and run their own movies longer than movies of other distributors. Despite these differences, there is no evidence consistent with anticompetitive input and customer foreclosure in integrated theaters. On the one hand, integrated and independent theaters screen the same share of integrated and independent movies. On the other hand, revenue differences between continued theater-owned movies and discontinued independent movies are inconsistent with customer-market-foreclosure motives given existing differences in distribution incentives between integrated and nonintegrated structures. Finally, we estimate a random-coefficient discrete-choice model of movie demand and show that integrated theaters deliver a higher level of utility with integrated movies than with independent movies through the direct effects of lower prices and more screenings.
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Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it