Being able to store data densely on a commodity material such as quartz is great for archival storage (e.g. Amazon Glacier). If the storage media is cheap, then

Being able to store data densely on a commodity material such as quartz is great for archival storage (e.g. Amazon Glacier). If the storage media is cheap, then it tends not to matter if it can be reused. For random access, rapidly created and destroyed data, SSD and HDDs will continue to dominate. But for the growing use case of hoarding data forever, this is a good fit.