It could well be argued, however, that motion-picture companies’ corporate links with the wider media world and emergent communications forms such as the Internet fostered receptivity to new technologies that rapidly transformed film production in the 1990s and into the 21st century.
In the last years of the 20th century and the early years of the 21st, the idea of "synergy" dominated the motion-picture industry in the United States, and an unprecedented wave of mergers and acquisitions pursued this ultimately elusive concept.
3D movies have actually been around a lot longer than widescreen ones. Almost as soon as the early still cameras were invented, This article tells us the whole story and the invention of 3d movies