Then all those rich investors can come out and buy shares in them at 20 cents on the dollar, no? Reset the mortgages and home prices. Bring back lower market prices with high interest rates until the market fixes itself?

There's going to be a LOT of nice homes sitting empty.
If someone built it or lived in it with a value of $300,000 this year which was hyper-inflated the past few years from $200,000.......then we NEED to go back to those low prices before the boom and the bust. And just have high interest rates. Wouldn't that stabilize the economy and get the banks back on their feet and give new investors what they need?
(Which is money in the bank?)