They could, but they won't. Because some people like it the way it is. And their voice is strong enough to prevent change.

I'm sure you know Hirschman's "exit, voice, loyalty". You are advocating "voice". My article says that at some point "voice" is dissipating productive effort and holding us back and "loyalty" is not absurd and would be much more beneficial to everybody who is not so pissed as to "exit"