Organized Labor vs Steamboat Willie
... Efforts to make the first-ever synchronized recording went up in smoke. Screening the completed film [Steamboat Willie] before Edouarde and his Orchestra was more distracting than helpful. Not only that, the musicians seemed to have their own issues with their recorded instrumentation. In a letter dated September 20, 1928, Walt writes to partner Ub Iwerks in California,
"Boy, the unions are sure tough on movie recording. They are doing all they can to discourage the “Sound Film” craze." ...
Kind of clear why theater musicians (via the American Federation of Musicians) were against recorded music in films. In one fell swoop, several thousand re-wired movie theaters would have no need for house musicians.
Similar dynamics continue eighty-five years further on: digital stunt men replace flesh and blood stunt men. Digital environments supplant wood and plaster sets. And of course there are actors and dress extras created inside a computer. Sort of crimps the style of real actors and extras, don't you think?
Technology constantly drives change, and labor is wise to change with it. (Because it's hard to stop the tide from coming in.)