As businesses start retaining and investing larger cash-reserves, they're turning into banks. Banks, meanwhile, need to find another line of work: they become asset traders. Meanwhile, your wages have been stagnant for decades, which means that in order to survive, you must become a debtor.
An interview with Costas Lapavitsas from the University of London School of Oriental and African Studies sets out a good explanation of "financialization" and how it's colonized every corner of our world.
So what have we got after four decades of this? These changes, seen very clearly in the United States, have created, firstly, a deeply unequal country, a deeply unequal society. Financialization is fundamentally about inequality. We see this inequality in terms of income, where the top 10 percent and the top 1 percent draw an extraordinary proportion of income annually. But we see it in terms of the functional distribution, the distribution of income between capital and labor, where labor has lost–and lost dramatically–during the last three to four decades in this country and in just about every other mature capitalist country that has financialized.
So this is a deeply unequal system. It generates inequality. Finance has acted as a key lever in increasing it inequality. Finance is a vital mechanism in increasing inequality. You can see it in terms of the profits it creates. Financial profit has become a huge part of total profit through these activities that I've just discussed by markets, households, and so on–a huge part of total profit. And the rich in this country and elsewhere typically become rich through financial methods; the way in which you acquire great wealth and you cream off the surplus is basically through financial methods, through access to financial assets, privileged ways of trading financial assets, and privileged position in of the financial system that allows you to extract vast returns, which appear as salaries and wages, in other words, remuneration for labor. Come on. What kind of remuneration for labor is this allows someone to draw tens of millions of dollars annually? For what kind of labor? This isn't labor. This is a kind of rent, this is a kind of surplus accruing because of power and position in the financial system or access to finance. And that is typical of financialization in this country and elsewhere.