For the more technical customer of 23andMe, there probably isn't a need to do all of the interpretation themselves. There are tools which will take the raw data and query public databases to build together a similar (and sometimes more up-to-date picture). I don't think the FDA would want to shut down something like SNPedia.
But, there is a lack of quality tools available to query public genomic databases based upon raw data received from services like 23andMe. If anyone is a 23andMe customer, try out Promethease[1]. There is probably room for selling software to DNA service customers, but it probably isn't that big of a market (yet?).
An example, well-designed tool for viewing raw data files is 4Peaks[2].