You'd expect wages to rise when it's in industries with supposed skills shortages, which necessitates major corporations lobbying government for more visas. If

You'd expect wages to rise when it's in industries with supposed skills shortages, which necessitates major corporations lobbying government for more visas. If wages rose, companies couldn't just uniformly cut back on projects to keep their net profit the same in a hypercompetitive industry. Hence the wage collusion scandal, mentioned above.