Out of all the people I know who have DSLRs, the vast majority of them have XTIs with kit lenses. I have not been able to convince any of them to invest in even the 50mm f/1.8. The XSI introduced the IS kit lens with improved optics. These are people happy with the OLD non-IS extra-blurry kit lens. I'm not sure why they bothered to get SLRs.

For the few who actually invest in quality glass, I expect the cheap price and high quality optics will result in many purchases.