Lower league clubs started going into administration after the ITV digital collapse.
If you mean that that was when clubs started going into admin and they hadn't been doing before, again, this just isn't true. I can think of one not too far from here that had already gone into admin twice and emerged with a CVA when it happened, for just one example.
I agree that Sky (before that) gave the Premier League a massive advantage, money wise, however the gamble that the Football League clubs took when ITV were promising millions of pounds over x amount of years, backfired and many clubs even to this day haven't recovered. The ITV deal was huge to the Championship, Lge 1 and Lge 2.
Yes I know. I was just disputing your contention that it all started with ITV Digital, it didn't. ITV Digital's own poor management and subsequent collapse and club's poor management of their expected pay-days around that certainly exacerbated the situation, but it didn't originate there.