It'll "never be enough" in the sense that there is a non-existent potential of higher wages to stop agitation for more money.
Because there is no disincentive for labor to ever-advance the claim that their wages are enough.
In addition, the incentive to ever-claim that wages are not enough is unable to be quneched due to the fact that there is no risk. That logic is what supports my point.
The point can be proofed to economic mechanisms, as well. The exchange of money for goods naturally sets prices via an auction mechanism that, in turn, naturally creates an economic hierarchy in purchasing power.
Which is a verbose way of saying that raising the wages of the working class, while periodically necessary, will always lead to rising prices to create relatively par pourchasing power over time. When speaking of wages, purchasing power is all that matters (assuming lack of debt).
Artificially and dramatically forcing wages up only creates economic churn in job availability, housing equality, and asset ownership. All negative for the working class. If forces them into unemployment, out of urban centers, and creates firesale auctions for assets that wealthy people take advantage of.
To make matters worse, the "forced equality" economics of communism are only feudalism in disguise (which is hidden on the balance sheet of the State and Feudal Lord). The closer that the working class gets to forced economic equality, the closer that they get to slavery.
The storm that's coming is a cyclical return to various feudalists battling it out for workers who are paid the lowest possible wages and who have no labor protection. But on a wider scale than we are used to seeing.
The problem with wage debates is that there is no solution aside from a delicate balance that is easily corruptable. In fact, its natural state is corrupt imbalance.
This problem is unsolveable because it is inherent in the system of money.