I think it's way more complex than what you've outlined.
How did you get a negative yield of -75.45%? You're not losing any of additional investment... are you comparing it to another yield generator?
There are additional benefits to Hive... do you need content created or help with other projects that you could fund with upvotes? Are there things you'd want to build on this decentralized blockchain that could be funded (partially or fully) by the DAO?
Obviously you're aware that other people could also upvote you which may result in potentially more than $13,500 in 90 days.
There's also all the community tokens... so if you were voting other people and they were voting you... you might also receive LEO tokens or POB tokens, etc, which would also (hopefully) increase in value over time.
The negative yield would be that I would have turn 1BTC ($55K) into $13,500 by buying delegation from 90 days delegation from blocktrades.
If you are an investor who want to add capital to a project, HIVE seems to be the worst choice to get a yield. It locks your money away for 13 weeks, you have to be super active to "maybe" make money and when the market turns and you need to lock in your gains or prevent loss, you are roadkill for 3 months.
Ah I see, I understand now.
You could just put your BTC into HBD and put it into Savings to earn 10% if that's what you're after. Withdrawing funds from the savings account takes 3 days.
I'm not sure Hive is really designed for yield. It's a decentralized social media platform. It's to help people become financially independent and to help developers use blockchain technology without fees.