More simply, Facebook will change when users stop using it. People vote with their time and attention. Many complain about Facebook's stance towards privacy or whatever, but they say one thing and then go back to using it (yes, I know, you, the person about to reply, you are different; that's great, but you're statistically invisible).
Facebook measures how people behave, not what pundits say.
Facebook measures how people behave, not what pundits say.