I agree with you on the outcome yet disagree on the cause. You mention $300B, I peg the market cap of crypto at $250B by Thanksgiving so we are close there.
The banking facade can go on a long time. I dont think the average sheep out there has any idea what is going on. Even in the big money hedge fund world, most of those investors lose too. The crypto money, like metals, is a fringe sector. While some put a portion of their portfolio into gold, as an example, most do not. So while the numbers are large in terms of dollars, it is still a small percentage of the population that will get into crypto.
And yes $5K will be a laugh in a couple years...hell, LTC might be $5K a coin by then (or more).