The reason these abuses go un-checked is because only the "little people" have to put up with it. Anyone who is anybody flies in their own chartered jet. In the GA terminal there is no TSA in sight and your pilot also acts as a concierge, booking a car service to take you to a restaurant reservation he also made for you while in flight.
Despite what appears to be hyperbole, I still don't know why you were downvoted. It's common throughout many industries to have more abusive policies for poorer people, and they continue to do so because the poorer people have fewer alternatives.
EDIT: maybe abusive is the wrong word, but definitely worse in some form.
I don't know if I would consider commercial airlines and GA/charters the same industry. Malice is being ascribed where incompetence more than adequately explains the differences.
We don't have to ascribe all faults to individuals rather than systems through which they work. Incompetent individuals can easily facilitate a malicious system of inputs and outcomes.
I don't know where we're drawing the above little people, but didn't Alec Baldwin famously almost get kicked off for playing video games at the wrong time on a public flight?
Arnold Schwartzenegger just did an AMA from a plane that stopped because the wifi cuts out at 10k feet, which I presume also places him on a commercial flight.
Medium sized and major airports have a "executive terminal" that handles business jets. The TSA is not usually present.
That is very different in "feel" than what is intended for GA, which is basically Cessna 172s flown by private pilots. Even small commuter airlines have different policies and procedures than a GA charter flight.