The market is too small. Lots of multimeters go straight to Bluetooth/WiFi modules so that you can log data into a cellphone or tablet, and that works betters because you have the data directly available to have graphs in realtime and so on.
I was thinking of making a pass-through adapter for the UT61E I have, to log data into a FRAM memory chip and send to PC at same time, but I'm just too busy (and lazy) to start such a project.