I realized that the structure of "You Ain't Going Nowhere" has some significance.
There are exceptions, but for the most part, the verses have the rhyme scheme AAAB, where the last line is "You ain't goin' nowhere." In a way, the recurring sounds of the rhymes (especially in the third verse where there's extra internal rhyme in the line "Buy me a flute and a gun that shoots") and the repetition of the title line both match this immobility.
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*I referenced Christopher Hjort's So You Want to Be a Rock 'n' Roll Star: The Byrds Day-by-Day 1965-1973, and I'm almost certain this video is from Brussels, Belgium on 18 May. Hjort notes that the show that day was filmed and even provides a set list, in which "You Ain't Going Nowhere" and "Truck Stop Girl" are back-to-back. The location also explains McGuinn's introduction in (bad) French. He says, "Chantons de Bob Dylan" ("Let's sing about Bob Dylan"), but I think he means, "Chanson de Bob Dylan" ("a song by Bob Dylan").
