So this is simply also a case of lack of bargaining power of workers.
The pie did grow, so it’s a benefit to society. It just didn’t grow enough that giving the employees a larger slice didn’t slightly shrink the owner’s pie. However, The owners pie shrunk less than it would have had the pie not grown due to increased efficiency.
I wonder how these studies captures the way the workers have more money that immediately flows back into the economy, benefiting everyone.
I think you left out the part about, "and at what point that creates inflationary pressure."
Is wage the only cause of inflation we care about? Guess so.
On the other hand, if people were going into debt with high interest credit cards, then it's very possible that demand doesn't actually change. Instead credit card debt gets paid off, or surplus income is banked as savings.
From the article:
The authors calculated that about 62 percent of the wage increase was absorbed through higher prices, while the rest was likely absorbed by a mix of reduced turnover and, crucially, lower profits for franchisees—hence the massive industry resistance.
Bargaining power is undoubtedly an issue here, but the success of the increase in minimum wage can probably be attributed to it being uniform across similar businesses and in an industry that can't exactly move to the next state over (without loosing business).
The last big CBO analysis on results of min wage does a better job summarizing all the literature. They also made a nice tool to visualize results https://www.cbo.gov/publication/55681
The results are pretty much what one should expect.
H1B visas are an extension of this. H1B visa workers are allowed in the country, but have a minimum wage in excess of 90k.