IBM has maintained its profitability for 17 years by replacing its highly productive, highly motivated and therefore highly paid individuals with lower-wage, less-productive, less-motivated employees - this has maintained profits but it has not optimized them.
https://seekingalpha.com/article/4105749-1-chart-ibms-financial-engineering-revealed-workload-rebalancing?auth_param=1dr84o:1crfk8b:564ece539576fcb110d843605faaf03e&dr=1&utoken=631c59460324890dda81ef6b2b1365fa112ec2b9