But, "the economy" is generally just a descriptor for what people need/want, and what they're willing to do for it.
A phrase like "slaves of the economy", with the implication that someone should be entitled to escape that condition, is about as ridiculous as thinking you are a "slave to nutrients" or a "slave to oxygen" or any other physical constraint. You can't escape it; you have to eat--what are you willing to do to get food?
However, what I think you're probably more upset about, and what you probably should instead be phrasing it as, is economic manipulation. That is something that can legitimately be unjust. Power and information are some tools to manipulate or benefit from economic conditions to a greater extent than others, and therefore have more boats or leisure time or political positions (or food or N95 masks or jobs etc etc)