I think the machine is a metaphor to the music business Roger Waters had to endure. at the end of the song the elevator goes up and the you hear all the people talking, drinking etc. Then it goes into have a cigar which is obviously about the record label owner telling "Pink" (haha, which ones Pink?) that he (ahem) really loves the band and that they're making a lot of money...
I think the machine is a metaphor to the music business Roger Waters had to endure. at the end of the song the elevator goes up and the you hear all the people talking, drinking etc. Then it goes into have a cigar which is obviously about the record label owner telling "Pink" (haha, which ones Pink?) that he (ahem) really loves the band and that they're making a lot of money...