A few things I think I've learned:
In its current state, most retail investors are simply supplying to the sophisticated investor.
Although some DeFi projects make a genuine effort to provide analysis tools to level the playing field, it's not nearly enough.
The safest least volatile yields in DeFi are lending your stable coins into a system such as aave. The yield is not far from a high yield USD savings account.
Exchanges such as Uniswap may be the most important legit tool in DeFi. The biggest problem is the liquidity provider's ability to protect their downside...so the investor adds on more sophisticated monitoring/hedging schemes. This gets us back to the retail investor being at a severe disadvantage.
Patrick is largely correct on perp futures being mostly used as a leverage instrument to gamble on bitcoin or ether by retail. However I think he's missing one point which is that actually some institutional players also use CME futures to gain exposure to Bitcoin (e.g., BITO ETF or a pension fund that wants to gain exposure to crypto and have a fiduciary duty to hold assets with AAA custodians).
The thesis being that if you're an institution, you don't trust the relatively "fly-by" offshore crypto or even US-regulated custodians of crypto. When you trade CME bitcoin futures, your settlement is guaranteed by the clearing entities of Chicago Mercantile Exchange which are bulge bracket firms of TradFi. So why CME futures largely reflect a premium over the spot BTC price - and this premium is a function of the demand of bitcoin at anytime and the Fed fund rate. As the bitcoin futures market is highly efficient, the CME futures premium is arbitraged across the various DeFi and CeFi exchanges with basis points added relative to the default risk of each venue.
And the basis trade itself is not a "risk-free" arbitrage. The seller on the other side of gamblers are exposed to "right-tail" risk - your premium you get paid to "carry" the bitcoin is fixed while the collateral you must hold in theory to "hold" the coin on behalf of the buyer could be in theory infinite if bitcoin skyrockets to infinity. Sell too much and you might not have enough collateral before the futures settlement happens (for a fixed term futures, not perps) kind of like a reverse but still deadly scenario with Silicon Valley Bank (i.e., you incur "paper loss" that goes away if you can hold it to expiry; but you get force liquidated before then).
that's deep, in all senses.
The understandable hatred of the casino and many scams has blinded most of HN as to the true potential of the technology and its associated new public institutions.
That's what a decentralized public blockchain is, a new kind of public institution.
One small example of this is that the most state-of-the-art perpetual futures market in the world is an Ethereum Layer 2 named Lighter https://app.lighter.xyz/markets/