Well, it's all about selling outstrike options. Naturally, the longer the world remains 'nice' and stable, the more people are willing to sell all sorts of tail risk...
As to why nobody wanted to buy them, I think it's, as the AI guy pointed out, all about the various restrictions on balance sheets. There's no appetite to exploit mispricings, because, no matter how you slice it, it requires an outlay of capital (probably can't repo these things no matter how much you're willing to pay).
As to why nobody wanted to buy them, I think it's, as the AI guy pointed out, all about the various restrictions on balance sheets. There's no appetite to exploit mispricings, because, no matter how you slice it, it requires an outlay of capital (probably can't repo these things no matter how much you're willing to pay).