I got another take on this question though really its an extreme number and slightly silly, 500 would have served the same purpose for a target in the question.
Dollar is not rising in value, the number produced and in promise set in debt obligations is gigantic into the trillions. The likely outcome is lower dollar value as expected, if you want to answer such an extreme question beyond the failure of BTC itself the answer might be the dollar.
If dollar as a currency standard excluding all political considerations and users external to its plain value were to be removed from its influence then we might see it revert to the pre nixon Dollar standard, thats coming upto 50 years since we fell off the wagon. Its extremely unlikely to occur but nothing is impossible and some would argue its necessary.
So we're talking dollar returning to a gold standard or a sold set ratio of value known to the world. This is likely forcing the mass default of dollar denominated debt such as treasury bonds. We would be talking a surplus fiscal budget not just in USA but many countries as so many use dollar debt finance and the value rising is unconsidered.
We're also talking the massive cuts to fiscal budgets to allow a surplus to taxes earnt, it would probably some recession from the upset to accounts. It is possible it could be positive long term and as said at the start it means Dollar currency standard becomes a solid prospect forcing many prices down.
In a strong dollar scenario beyond imagination but still feasible then BTC at $5 would be quite a high price, it'd revert 10 years of QE programs for starters and send us back in time to a harder ratio for crypto. Neither Dollar or BTC would break, it would mean the break of 20 trillions of dollar debt similar to seen in failed nation states. It can happen but usually its not by choice.
https://www.thebalance.com/budget-deficit-definition-and-how-it-affects-the-economy-3305820