App Store downloads brought in $26.5 billion for developers in 2017, and Asymco’s Horace Dediu has unearthed some interesting stats about how that stacks up against other juggernauts of American business. If App Store downloads continue to increase at the same rate, the amount generated in 2018 will be more than the entire film industry combined, as well as more than the revenue taken in by the entire McDonald’s Corporation in 2016. In the…