I am not as worried if this data gets out or not.
I think there are negative externalities if the data is sold to insurance firms — who can use the genomic information in litigation and policy rejections — or if the data is sold to some sort of powerful, pro-eugenics political organization. The insurance externalities likely can be mitigated with minimal legislation (protecting consumers in a similar manner to how we protect those with pre-existing conditions) and it is reasonable to assume pro-eugenics political groups wouldn’t be any less dangerous without this genomic data available.
Thus, I struggle to see how this data changing hands would be especially detrimental to society. One could contend a moral dilemma will arise from future developments in cloning, but would it? We already have clones in the form of identical twins, and their existence does not seem to create many, if any, especially problematic moral dilemmas. Maybe people are worried that society will start cloning celebrities and famous intellectuals instead of having babies more naturally — creating a world of designer babies where the diversity of thought and talent shrinks in a “tragedy of the commons”-esque dilemma — but I don’t think this is people’s issue because most people frame their qualms as more of a personal privacy issue. Moreover, designer babies issue I describe would likely become an issue with or without cloning.
There are issues that come to mind regarding genomics in commerce — such as the ethics and market incentives of patenting certain genomic patterns — but again I don’t see how this 23andMe data changing hands make this issue any more pressing than before.
On the other hand, my instinct (which I have learned to never blindly trust) is that making the data more widely available may make it cheaper and easier for researchers to make impactful discoveries. Therefore, my biggest worry with the change of ownership is that the new owners may keep the data behind a bigger wall.