> I can 100% imagine a company such as 23andMe storing DNA for later sequencing
They do, as far as I know. Most genealogical DNA testing companies do, and they tell you so. In case you want to upgrade the analysis later.
> doing WGS to do their side business
That would land them in hot water with the EU. Per GDPR, you can't ask for PII for one purpose and use it for something else down the line. 23andMe customers didn't consent to WGS.
But there's another reason I think they wouldn't do that, and that's that WGS is time-consuming and expensive. Some random person's DNA data isn't that valuable. There's a reason payment is part of their business model, and if that's true for cheap microarray tests, how much more isn't it true for terribly expensive WGS tests?
They do, as far as I know. Most genealogical DNA testing companies do, and they tell you so. In case you want to upgrade the analysis later.
> doing WGS to do their side business
That would land them in hot water with the EU. Per GDPR, you can't ask for PII for one purpose and use it for something else down the line. 23andMe customers didn't consent to WGS.
But there's another reason I think they wouldn't do that, and that's that WGS is time-consuming and expensive. Some random person's DNA data isn't that valuable. There's a reason payment is part of their business model, and if that's true for cheap microarray tests, how much more isn't it true for terribly expensive WGS tests?