Have McKinsey and its consulting rivals got too big?

Of course they got too big, and especially they got too enmeshed with the auditing business.

It's time to break them all up. The "firewall" that should be there from a legal perspective is a joke in practice, and when there are only three to four companies, there is no place for fresh blood and with it fresh ideas to enter the market.

The firewall is of course a fiction.

The entire point of these consultancies is to allow collusion between competitors, which is otherwise illegal.