The problem with selling your wares to Fortune 500 companies? There are only 500 of them. And the high-priced, hard-charging sales force required to woo them is prone to scandal, as a recent sex-bias lawsuit against EMC alleges. That, I believes, explains why the storage-hardware maker is getting into the consumer business with its $76 million purchase of Mozy, an online data-backup service. With only 180,000 customers, the purchase price seems high, as GigaOm and others have noted. But small businesses are often better courted with consumer-friendly offerings than with hard-sell pitchmen.