Of course another famous monologue would be Warren Beatty's to Finch. https://www.youtube.com/watch?v=yuBe93FMiJc
It's worth pointing out this quote: "One vast and ecumenical holding company, for whom all men will work to serve a common profit, in which all men will hold a share of stock. All necessities provided, all anxieties tranquilized, all boredom amused"
I'm not sure about the last part of people being happy, but what he's really talking about in hindsight is the index fund. Vanguard started the first SP500 index fund on December 31, 1975. Network came out in 1976.
Also worth noting that GK Chesterton also talked about something similar to an index fund, but it was an idea called distributism and was a direct challenge to socialism