I think the pleasure of form is that you have a companion with you besides all the poetry you have ever read.
Often people, when they're confronted with a poem, it's like someone who keep saying 'what is the meaning of this? What is the meaning of this?' And that dulls us to the other pleasures poetry offers.
...pleasure, of course, is a slippery word.... Our pleasures ultimately belong to us, not to the pleasure's source.