They lost most of the market for two reasons: - Final Cut X was a major re-write that didn't support importing old project formats for something like two years

They lost most of the market for two reasons: - Final Cut X was a major re-write that didn't support importing old project formats for something like two years and didn't support all required video formats for the same period - Mac Pro was abandoned, twice. Once for years before the trashcan design. Once for years after the trashcan design.