I mean, if you live forever and cannot die by any means, your odds of getting stuck somewhere approaches 100% (fall in a pit, landslide, fall overboard on a boat, stuck in the sun, lost in space, etc).
I imagine it is the same for data. The longer it is available, the more likelihood of it getting out of the company.
At this point, it's pretty safe to just assume that any personal data any company has about you will be leaked sooner or later.