Trust me I KNOW how big Celtic are and Rangers also. I mean no dis respect when I say they are not as big as Liverpool. They just are not. The have a massive history ( I should know, coming from Ireland you can effectively say every one has Celtic as their "second" club.
The EPL is corrupt, FACT! But so are the Spanish and Italian leagues and have been for years.
The TV/Media age has taken the EPL to a dizzy-ing height and only now with the fair play rules coming in will it hopefully take it down a notch.
Now, saying that Celtic and Rangers still play in the Scottish league, just look at the table for crying out loud. It's a two horse race EVERY year up there. The league is not as good quality wise and has not been for years.
Hence the money is NOT going there. Look at the FAI, Shamrock Rovers, Bohemians, etc. Same effectively. The EPL is attractive, has the star players and is riding the train until it buckles.
Celtic and Rangers going into the EPL will effectively kill off Scottish football and should not happen.
It is only for money any way!