A previous agreement with NBCUniversal prevents "Yellowstone" from being streamed on the network's own service, Paramount+.
Peacock acquired the streaming rights to "Yellowstone" in January 2020, between the second and third seasons of the program.
The streaming service debuted in July 2020, with "Yellowstone" as one of its main features.
Paramount's own streaming channel, Paramount+, was yet to start in 2020. The streaming service would finally launch a year later, in March 2021.
To compensate for the loss of streaming money and the great demand for "Yellowstone," Paramount went all-in on the Western genre, signing Taylor Sheridan to numerous projects linked to the program.
The first was "1883," a precursor to "Yellowstone," which will be available exclusively on Paramount+ in December 2021.
Another "Yellowstone" prequel, "1923," starring Harrison Ford and Helen Mirren, is available, as is the presently shooting "Lawmen: Bass Reeves," which will be available later this year.