@Redcarmoose: Indeed, it's classical, cyclical. It's Swinburne and Wilde and Sassoon and all those fellers from Oxford who told Wilfred Owen how to get laid the next time he was on leave in London (hint: you start at the docks).
But poor old Davie Bowie glammed so hard, he couldn't remember what happened or who he'd been with from 1970-74 (hint: Mick Jagger and Iggy Pop both looked uncomfortable and ducked outside for a smoke).
As for the future prospects of glam, I thought we were already enjoying a Renaissance immensely: it's a mundo glami kind of world with bling everywhere, and metrosexual artistes, and Madonna's Gaultier bustiers looking a little frumpy, like something casual Queen Elizabeth might wear out to walk the Yorkies. And there's Lady Gaga, who went all 'meta' and did Madonna one better by marketing the marketing of herself.
It's a Fact! #402 [for America's Parade Magazine, Oct. 11 2009]: My sister was working in a little modern art gallery here in Birmingham in 1999, and one day Michael Stipe walked in. When she introduced herself, Stipe uttered a number of gnomic prognostications, including that "There's not enough glam in rock any more." but he was about to change all that. She told me he was wearing black nail polish, so I imagine that it wasn't long before he emerged from the black vinyl cocoon.