Asset management firms invest in everything from the stock market to housing, and as a result they now oversee over 26% of global private wealth. The 'Big Three' firms now manage over $23 trillion in assets - a number close to the GDP of the US. But, argues A.G. (writing under a pseudonym while she investigates the firms), these companies' size and influence encourages anti-competitive behaviour and prioritises short-term profits over broader economic health. This has led to wage stagnation and increased wealth concentration among the rich. We need alternative approaches. A democratically controlled public asset management firm could help us to achieve more equitable and sustainable prosperity.