Here is an interesting analysis of global music industry revenues and distribution of market share published by Music Business Worldwide on February 26th.
Unfortunately, the analysis allocates the market share of major label distributed independent labels to the major label distributor. This significantly diminishes the independent market share number. Nearly 50% of A2IM’s labels (U.S. only) are distributed by major label distributors (or their subsidiaries). The percentage of independents distributed through major label systems varies from country to country.
The analysis does point out that these numbers are broken out by distribution not ownership. However, the article then juxtaposes a U.S. only analysis by ownership with global market share by distribution, further confusing matters.