You've got a fairly standard wheel with normal elbowed stainless spokes.

There can be a difference in the quality of spokes between the major manufacturers (DT Swiss, Wheelsmith, Sapim) and generic equivalents. But, initial build quality, stress relieving, follow up retentsioning and ultimate spoke tension probably have far more to do with spoke longevity.

Unless you've already suffered spoke breakage, there's a very good chance that some proactive tensioning of the rear spokes could provide them with the best chance of providing you with reasonable survice life.

There have, from time to time, been batches of generic spokes that were known to be defective. If you're wheel does suffer from such an issue, there is no reason why you couldn't relace the wheel with new spokes. Expect about .50c per spoke plus labour.