i think you are trolling.. bitcoin is not money..
also the fact that most exchanges are banning US customers and the ones that stay available are shady has a lot to say about bitcoins future..
if buying drugs is bitcoins main feature, then its doomed.
and no i do believe that blockchain tech does not need to have any monetary value to work..
It's the US government forcing customers from exchanges. The ones that still can be bothered accommodate US customers are a cut above in legitimacy.
If your blockchain has no monetary value then there's zero incentive to work to secure it which means it's effectively useless as anyone will be able to wipe it out.
If your blockchain is private and centralised, and that's the only scenario where a valueless chain could work, you may as well stick with databases in most cases.