More people adopting (or wanting to adopt) cryonics should increase the investment in research, which increases the chance (and most likely the certainty level) of it working. Also consider that higher tech methods may be more expensive to implement. Storage costs would certainly drop, but if it turns out you need ten times the equipment to do ten times the damage reduction it may not drop the cost overall, but still end up with higher utility.
More people adopting (or wanting to adopt) cryonics should increase the investment in research, which increases the chance (and most likely the certainty level) of it working. Also consider that higher tech methods may be more expensive to implement. Storage costs would certainly drop, but if it turns out you need ten times the equipment to do ten times the damage reduction it may not drop the cost overall, but still end up with higher utility.