Actually this isn't surprising at all.
Most people i know just recently (within the past two years) got around to buying their first 'large' (27" or more) flat screen tv with digital tuners and 16:9 widescreen format let alone contemplating a 5.1 audio setup.
Not everyone can be cutting edge years prior to major changes in electronics and 7.1 is still just that (even though those more educated in home theatre have heard about it for years).
Consider yourself as having that Intel Core i7 processor...but having had it three or four years ago and wondering why everyone is just getting around to having this now.
