The entire situation was addressed in detail by Mark Rosewater in a Making Magic article posted in June of 2006, and hes stirringly candid about the thought process of WotC at the time when it came to this particular leak, and the fallout it caused
It is important to note that the average Pokmon pool does not make you rich
That's not to say upgrades can't be made, but they would have to be perfect so as not to detract from the overall synergy
The new serialised cards are the extreme version of this, and its no coincidence that the ultimate serialised card the one-of The One Ring is the most valuable Magic card of all time.
(You may look at cards as you draft them.) Flying Watermark: Conspiracy Seal Illustrated by Evan Shipard Standard Not Legal Alchemy Not Legal Pioneer Not Legal Historic Not Legal Modern Not Legal Brawl Not Legal Legacy Legal Comp
These sorts of two-for-ones are the lifeblood of a Limited control deck, and Phyrexian Ingester is likely to end many games it is cast