The early 20th century industrialists talked about all the same stuff. People are fickle and managing them at scale is hard. There's more to it than just "give them a good deal". There are plenty of people who are getting a "good deal" who become complacent or disgruntled.
Early 20th centruy industrialists also had to deal with the looming threat of anti-trust regulations. These days it's almost a joke. There is no trust-busting anymore. The monopolies control foreign and domestic policy through massive lobbying efforts.
Your argument has no relevance to the comment you are responding to as the point being made was it is human nature for (some) people to get complacent regardless of the circumstances.
contextualizing a point is just as legitimate as responding to it directly and this particular comment is relevant
perhaps some people will always grow complacent but you could just as easily make an essentialist argument about the corporation: maybe some employers will always abuse their employees, certainly some deliberately make it difficult to distinguish worker complacency from legitimate complaint, which bears directly on the original claim about human nature
The early 20th century industrialists talked about all the same stuff. People are fickle and managing them at scale is hard. There's more to it than just "give them a good deal". There are plenty of people who are getting a "good deal" who become complacent or disgruntled.