I'm a bit confused about the accounting details as well, but I think the key bit is that a scrapped movie becomes an immediate tax write-off, whereas a released move must depreciate its costs over time.
By writing the movie off entirely, Warner Brothers foregoes the marginal profit from releasing the movie (income less distribution costs, considering the movie itself to be a sunk cost), but in return it can claim the tax benefits now rather than over time. At some implied internal interest rate (where a dollar today is worth more than a dollar next year), that makes sense.
Unless there's some detail that I've missed in the above, Warner Brothers seems very desperate to bolster its current accounting profits at the expense of longer-term financial health.
They could still count the delta between their production cost and the money they got as a loss and deduct that from their taxable income, no?
They have no incentive to underestimate the value of the final product.
Income - expenses = taxable earnings.
As a business, the money you get by earning a dollar is always bigger than the taxes you pay on it.
If they’re scrapping it, they are clearly deciding that the cost of finishing and marketing this movie is greater than the value of the movie.
What am I missing?