Skeptics argue that time is on their side, with the next big Lowcountry quake possible 250 years off. And then there's the cost during a recession. Estimates for the repair of the Rivers campus climbed in 2008 with $4 million added to take care of seismic concerns.
Apparently there may be some local corruption here as well, which adds to the mix. But this is the classic '250 year earthquake' problem. Charleston has a lot of unstable soils, just like Boston.