If you want a debate about your question, then basing it on a contrived, overly weak example is not the best way. Your question is interesting, so I’ll go there, but first an examination of your example.
It could also be argued that the success is not 50% due to the manager, and that the hard work of the farmers is more important. If the farmers readily share equipment, are competent and cooperative and generally do not require oversight, then paying half to the manager is ridiculous.
Second, even if the unrealistic percentage isn’t contested, the question is why middle managers in real life don’t make 10 times the wages of the workers. A basic understanding of economics, including supply and demand is required to understand why the compensation for various jobs is determined. I’ll have to simply things, so bare with me. Where better to start than the Dummies web site? Let’s look at their article, Considering Factors that Affect Job Pay
Note that the basic premise of the OP isn’t listed. If the premise were true, then this article could be simply replaced by a formula
Since there are actually other factors listed, I think the burden of proof to show why this factor determines compensation falls on the OP. As common sense shows, the market price of the job is a more important factor. That is determined by many other factors, several of which are listed above.
As an aside, this example ignores the owner. What is she getting out of this?
OK, leaving the example aside, the question must be asked how much tampering with wages are happening in the actual job market. Since compensation is generally not determined solely as a factor of a person’s individual contributions to the profitability of an organization, then this begs the question of what constitutes artificial flattening of wages.
Can we still find a question in this? I think a better question is a straight “Is it beneficial to have a smaller wage gap than a larger one?”
There have been several good answers so far, but I would have to agree with the first one give by ITR Campion, that when the rich get too powerful they use that power to maintain their position in society. If the wage gap were too large, it would restrict mobility in society. The various costs of admission to elite society would rise to deny opportunities to the poor.
The advantage of a flatter wage scale is greater mobility, offering a better chance to people to compete on abilities and not solely of the luck of which family they are born into.
