This is an excellent resource and a great read, but DAMN do money markets seem stupid as all get out to me. Where is the productive output of all these arbitrage shell games? How is this more than an abysmal waste of time and resources simply to make a small handful of bankers richer?
I’m the author. Thank you for saying it is an excellent read — that was no small amount of work. You ask “Where is the productive output of all these arbitrage shell games?”, which is a very fair question. The purpose of financial markets, sometimes but not always wholly achieved, is to transfer risks to those best able to hold them. E.g., you are not the optimal person to hold the risk that, through no fault of your…
That is just one of the purposes; others are:
- time-shifting of consumption: borrow when you study or build a house, then invest and save during work years, then live of retirement portfolio
- maturity transformation enabling investment: extra cash goes in the bank (and can be redeemed on demand), is bundled and lent (long-term) to fund construction or businesses [1]
- allocative function: send capital to its most productive use. For that, you need accurate prices, supported by equity research and markets.
So, in real financial markets, all the arbitrage games etc. [2] at least support actual productive purposes.
In crypto, it's just a pure cargo cult copy of financial markets without any underlying productive purpose.
[1] that whole banking business is somewhat precarious, but reasonably well understood (since Bagehot) and regulated/insured, though in recent times obviously hasn't worked great. Alternative models (narrow banks + private credit) are conceivable.
[2] and to be clear: the amount finance skims of the economy is way too large. Similarly, building a somewhat straighter fibre (and then microwave towers) from Chicago to NY has no societal benefit I can discern. (But the solution to that is fintech and regulation, not crypto.)