Okay, I'm going to try and explain it to you step by step because you are talking about things that are completely unrelated. I never said anything about the pay that tenured professors make, nor did I talk about the drain that the professors make on the resources of the institution.
What I talked about was the disproportionate level of power that is seated in the hands of tenured professors. Tenured professors have an attitude of entitlement that they do not have to answer to anyone, most especially the world outside of academia. Tenured professors then create an ivory tower that is disconnected from the real world because they do not need to have any connection to it.
The result is that degree programs often do not have any connection to the outside world and programs are created that do not serve the public or private sector and therefore do not serve their students. In parts of Europe the problem is so bad that many companies won't touch a graduate without two years of unpaid free labor just to show that they have gained some actual real world knowledge.
In other fields departments do nothing but churn out students for degrees that have little or no prospects for a job as certain fields simply have far fewer positions than degrees are granted for each year. The net result is that those students are forced by a job market that does not have enough jobs for their field to become the proverbial PhD at a fast food job while they compete for a too few positions with all of their previous classmates.
Words like best practices, ITIL, industry, government, the private world are answered with "that's not how we do things around here" - and it doesn't matter what the subject is. I have seen this attitude up close and personal with tenured professors routinely doing things that would get them fired in any other setting that didn't have anything to do with free speech.
All of this has absolutely nothing to do with the ultra-wealthy (whom I do not care for and am not defending) or the business world and everything to do with the Ivory Tower and it's disconnect from the real world.