Everything in the fiat system is going to collapse, Bitcoin is going to replace it, in the same way the Internet replaced fax machines.
Until a couple of years ago, Internet fax gateways still existed, however.
Most companies have tangible value and their share price should reflect this, as fiat becomes increasingly unable to do this, share prices will be shown in Sats.
In countries with hyper inflation, such as the Lebanon, people still use the currency on a day to day basis, but as soon as they received payment for their goods, they transfer that local currency into a more stable asset such as dollars, or in the Crypto world, Tether or Bitcoin.
What surprised me about observing these countries is that hyperinflation is no longer an end game, it simply enforces a different coping strategy.