Profit maximization does not inherently create efficiency for all consumers.
A profit maximizing company may reasonably say "oh this population is super expensive to serve so we will let services there stagnate or even remove services for that population because it is more efficient for us to focus elsewhere."
Or consider a subscription service that makes it considerably more difficult to unsubscribe. That increases profit while making the product actively worse.
Profit incentive leads to efficiency of profit extraction, which is only loosely correlated to efficiency of services for consumers and occasionally runs in total opposition to efficiency of services for consumers.
A profit maximizing company may reasonably say "oh this population is super expensive to serve so we will let services there stagnate or even remove services for that population because it is more efficient for us to focus elsewhere."
Or consider a subscription service that makes it considerably more difficult to unsubscribe. That increases profit while making the product actively worse.
Profit incentive leads to efficiency of profit extraction, which is only loosely correlated to efficiency of services for consumers and occasionally runs in total opposition to efficiency of services for consumers.