It was more work than I thought it would be, but we got Fathom 2.3 hooked up to a license server so that Concord Consortium can offer licenses for sale. The site went live on 5/28/2015. See Fathom Dynamic Data Software.
I’m really pleased with the result and the very inexpensive pricing: $5.25 per single-computer, 1-year expiring license with discounts for 30 or more computers; $39 per single-user, non-expiring license with discounts for 10 or more computers.
We didn’t have time to fix the OS X 10.9+ bug that prevents Fathom from scraping data from URLs and from downloading census data, but we know how to fix it and will provide a free upgrade with the fix soon.