It's interesting to imagine how this would've worked in 1995 or something, if the sequencing was possible. You'd have done the sample, and in response they'd send you three CD-ROMs. The first is the visualizer program which you'd install as an executable. The other discs are your genome*. If your spouse or kid got their genome sequenced, you'd get two more discs.

Every year the company would print an update to the disease database on more CDs, and make them available for a relatively small price, probably exclusively by mail.

Obviously there's some aspects of this that suck, but it's interesting to see how it's so much better for privacy, because data hoarding wasn't viable at scale or as a business.

* Two, because a genome is > 700MB, so it won't fit on a single disc. How annoying the size limit of a CD would've been if you had to solve this problem at work!