[quote=Dervish]
I'm totally not knocking your own personal sense of satisfaction. :P I'm just relating my own younger self's experience and utter disappointment at Oak's utter inability to give a fuck. I thought he would have done something similar to beating the Elite 4, thank me for fulfilling his lifelong dream, give me an item like a unique TM (or Pokemon, a level 50 that was Oak's first Pokemon or the unclaimed starter would have been awesome).But nope. Up yours, you jaded, uninterested old fuck.
[/quote]

People have look in the data of those games, and it turns out. 

Oak was going to be a trainer battle, the hardest one in the game.

And he would use what ever starter that was never picked.