BlackRock helped to play one of the instrument, but there are many instruments in the game of finance.

See it this way:

In the old world, people produces actual product to get rich, the landlord, the factory owners etc. It worked out fine overall so the world accepted this game mode as an option, in addition to the old lord/emperor mode.

Then, some smart gamblers discovered that they can gamble on promises and expectations to get rich too, and it worked out good overall so the world again accepted it as a new game mode as an option too.

The wealth divide always exists, and historically can largely/only be destroyed by time and/or large scale disasters. But in the new gambler game mode, most people ain't in it (as in "It's a big club and you ain't in it" from George Carlin) and don't have the power to play it. It's a system don't reward honor, loyalty or labor. That's why most people are left out while the riches steams far ahead (then jets far ahead, then rockets far ahead, you get the idea).