It's going to be much longer than 20 years because of all the stuff that's being rearranged in the government right now. The purchasing power of the dollar has already clawed back much of what was lost in the last QE.

I think that's largely the reason for the most recent sharp decline in Bitcoin's dollar price.

Of course you will never see companies bring their prices back down, but you will notice that they won't go up again for a while.