Lots, but I always think of Wall-E with "Buy n Large" (https://pixar.fandom.com/wiki/Buy_n_Large), it seems to be so close to where Amazon will be in 100 years if we let it. Particularly if you include Blue Origin as part of "Bezos/Amazon".
You're trying to find a media reference, but conglomerates that do everything are already a thing; think of the Samsung group that does everything from heavy ship building to microchip manufacturing, insurance, advertising, and a theme park. See also: https://en.wikipedia.org/wiki/Chaebol