Someone correct me if I'm way off, but I've been thinking that leveraged markets and margin trading have more of a negative effect than just creating risk of a

Someone correct me if I'm way off, but I've been thinking that leveraged markets and margin trading have more of a negative effect than just creating risk of a domino effect. They also resist change (change that is sometimes needed). If tons of huge banks have tons of money on the line in leveraged crude oil futures, then there would be resistance to global movement away from fossil fuels. Larger financial markets should in theory provide oil to the gears of the economy, but I think that if the industry becomes so bloated it will actually cause additional friction. Please point me in the right direction if there is anything written on this topic.