I don't think you're missing anything, just running into the intentional anti-piracy features.
Right. Most online readers for digital publications disallow printing or saving.
However, you could just grab a screenshot and print that.
I'm not sure how to do it in Windoze, but if you happen to be on a Mac running OS X, just do a command-shift-4
, select the area you want, then print the saved result as usual.