[dhruvrrp]

Current corporation structure is not meant to increase individual productivity, but rather it increases on group productivity (at the cost of individual productivity) which is why middle managers are always be important.

People leave, go on vacations, get sick, priorities changes, all of which need to be dealt with. And in an environment where the amount of work available to do is always higher than the resources available, you need middle managers to deal with other teams, PMs, customers etc.