Actually I personally won't have a problem at all, since I bring a set of high-isolation earbuds (www.shure.com) and an MP3 player.
But overall, other people talking has been a problem for years, before phones, then with phones, now with VoIP -- it's all the same. My solution: Get earbuds.
People flying on airplanes should do so in the nude, with no carry-on anything, and should be duct-taped to their seats the entire flight: that would ensure safety, equality and expedited travel. Besides, who knows, you might get to sit next to a really hot babe.