workers that produce wealth and are essential
You got it wrong - workers alone won't produce anything. You need everything: Workers, managers, accountants, capital, financial system, machines, supply chains, logistics, customer acquisition and so on. Each one of these parts is crucial - wealth is only produced if all those elements are correctly allocated.
Half of these things are provided by separate companies, which have their own complex structures, that together create wealth producing market environment.
"I'm a worker so I produce wealth!" Is a harmful simplification. Skilled worker without all that backend isn't worth a jack shit. This is why there're so huge wage disparities between poor and rich countries - workers may be equally skilled, but the backend that supports the work in the poor country simply doesn't exist.
markets fail very often when the incentives and structure are not aligned with the socially desired outcomes.
There're corner cases that cause issues - but this is why we have legal framework to fix them - antitrust laws, regulation of relations between employee-emplyer, consumer protection, green energy incentives and so on