Can my university revoke my degree after it was granted due to (corporate) data having changed?
Revoking a degree is rarely done and, then, only for the most extreme reasons such as explicit dishonesty and such. Any results in any thesis are subject to revision as new information becomes available that was not present in the past. It doesn't mean that the work was wrongly done, but only that what is known has advanced. 

Since you re-did the experiment and came to the same conclusion, you may be able to publish something based on the new results and, when citing your unpublished theses, mention that the conclusions there were verified with new data.