I value the happiness of others a great deal-to the point of being a people pleaser.
I suspect since I strongly mirror the pain of those around me-their pain becomes my internal feelings- thus I seek to minimize that internal pain, by helping the other people or finding ways to make their existence happier.
Over a lifetime, this yields personal values focused on helping others be happier and minimizing the pain and unhappiness of others.
I, personally, will sacrifice happiness of the people in the short term in order to achieve long term happiness-and suffer the consequences of immediate anger and frustration on their part. NeTe can see a better future via change. The resultant long term happiness yields internal harmony-with myself.
Interestingly-Ne forces me to feel the feelings of those close to me and those I have never met through extrapolation/connection. By taking your above rules and applying them to each Fi type, it might explain how Fi can develop such different values. SWEET!