Comment by Analemma_

Tape drives are really picky compared to HDDs: they don't like it when the environment is too hot, or too cold, or too humid, or too dry, or too dusty, or with too many vibrations, etc. They're really only meant for datacenters with controlled environments. A prosumer version would need additional engineering for environmental tolerance that the enterprise ones don't have, and end up costing more, not less, especially with the tiny markets involved.