5 years of having no interest and therefore no particular reason to buy it or hold it. Mostly its been converted back down to HIVE (which in turn has likely resulted in more selling pressure on HIVE and a lower price)
Anyway, after the next hard fork it will be possible to convert HIVE into HBD. So as much as there is demand for can be created.
Do you think with upcoming changes we could see HBD grow to hundreds of millions in existence? Would get attention of exchanges and more people using it.
I'm not going to predict a number, as it depends on many factors including awareness and demand, but the mechanism to grow quickly is now there if needed.