As
revealed, the methodology is questionable as Disney based the ROI on the revenue generated by the movies, merchandise, DVDs and Blu Rays rather than the profit they made as it should have done. Using the revenue rather than the profit artificially inflates the result as it doesn't factor in the costs that Disney had to pay out.
Even this wasn't enough for the media giant so it also forecast the revenue that it expected the
Star Wars movies, merchandise, DVDs and Blu Rays to generate over a ten-year period and based the calculation on that too. In other words, Disney hasn't actually received the revenue that it used to calculate the return on its investment.