Randy,
There is a lot of other reasons and history that is not being touched.
~1059 A.D. -
In Nomine Domine Papal Bull by Pope Nicholas II
a) For the very first time the Bishop of Rome is selected from within the Church:
Code:
Why is this necessary? [The Investiture Controversy](http://www.newadvent.org/cathen/08084c.htm), where Bishops and abbots were nominated and installed by the rulers of the region where the Bishopric Office also had jurisdiction. The lines between Church government and State government were practically invisible.
The Investiture Controversy carried on, during which time – Henry IV (Roman Emperor) along with the German and Northern Italy Bishops renounced their allegiance to the Pope. It was so bad that Henry IV got excommunicated and in 1077 A.D. at the Council of Autun – the ecclesiastical investitures by the laity (Including Rulers) were finally banned. This paved the way for the biggest development yet:
~1090 A.D. -
Dictatus Papae by Pope Gregory VII
For the first time we see the following:
1. That the Roman pontiff alone can with right be called universal.
2. That he alone can depose or reinstate bishops.
3. That, in a council his legate, even if a lower grade, is above all bishops, and can pass sentence of deposition against them.
4. That the pope may depose the absent.
5. That, among other things, we ought not to remain in the same house with those excommunicated by him.
6. That for him alone is it lawful, according to the needs of the time, to make new laws, to assemble together new congregations, to make an abbey of a canonry; and, on the other hand, to divide a rich bishopric and unite the poor ones.
7. That he alone may use the imperial insignia.
8. That of the pope alone all princes shall kiss the feet.
9. That his name alone shall be spoken in the churches.
10. That this is the only name in the world.
This is completely absent during the first 1,000 years of the Church. In fact, it all happened after the Great Schism in 1054 A.D.
And I am not touching on other factors like transportation, communication, and others that also contribute to the absence of supreme, absolute and immediate jurisdiction of the Bishop of Rome over all the other Sees.
It is just not there for those first 1,000 years.