In August 2019, WeWork cofounders Adam and Rebekah Neumann made an unusual philanthropic pledge. In a 220-page filing for an initial public offering, the couple said they would donate $1 billion to charity in the decade after the company went public. If they failed to do so, their voting power in the company would be halved. Fast forward four and a half years. WeWork's parent company filed for bankruptcy late last year, capping a precipitous fall that started with that IPO filing, which the company later withdrew, and Adam Neumann being forced out as CEO. The infamous meltdown has now been chronicled in books, podcasts, a documentary and a TV show. The Chapter 11 filing came the week after another would-be mega-philanthropist, former effective altruism poster boy Sam Bankman-Fried, was convicted of stealing more than $8 billion from customers of his now-bankrupt cryptocurrency exchange, FTX, in what's been called one of the biggest financial frauds on record. (He is expected to appeal the conviction.)