It doesn't necessarily block material success for individuals who have those things writ large in their soul. If someone is a great musician, Christianity cannot 'unmake' this immediately, only co-opt it.
However, the price of material success for many is enslavement through drugs, booze and food, passions, being under boot of the more powerful and shady, bad relationships, an existential sadness that success cannot override, libertinism and restriction leading to self-abasement, and whatever one's outlook, succumbing to infirmity and disease in a degraded way. Some artists, believe it or not, despise the art they make, and want to do something else, but can't; they are trapped.
The other issue is that all these earthly perspectives do not show what occurs to these people on the other side, and rarely this involves things like retardation and deafness occurring as an 'accident', for instance.
The ultimate powerlessness and slavery is mere ignorance, being in ignorance to the extent of most people that makes some improvement possible, but can never provide the full picture and not full manoeuvrability to do as one pleases.
The 'power' of their soul can be illusory in this context because being good at one thing does not preclude bad things from happening. If they piss off a bunch of rabbis in the street from an innocent mistake, all that can come crashing down in a microsecond. If they are physically weak and vulnerable to a serial killer, all the gold in the world can do nothing.