> Nothing stops the average citizen from organizing and getting similar access to representatives

I disagree pretty strongly. There are tons of soft power social levers and bureaucratic structures designed exactly to prevent your average Joe from getting access to representatives

Even a comparatively powerful person like a wealthy CEO of a big company often experiences friction trying to get access to public servants. That's why they hire lobbyists whose job it is to get past the friction

You’re mistaking “barriers” with logical prioritization.

Of course the groups that represent larger voting blocks get easier access - that makes perfect sense.

But like the example I gave - the access is possible. Most people who complain about a lack of access never tried.