… while we think of the role of the finance sector as “capital allocation” – that is, using investors' money to fund new businesses and expansions for existing business – that hasn’t been important to finance for quite some time. Today, only 3% of bank activity consists of “lending to firms and individuals engaged in the production of goods and services.” The other 97% of finance is gambling."
— Cory Doctorow, A perfect distillation of the social uselessness of finance