Yes I know it's much more than pre2005 (that is just short hand for basically no rules at all). And otherwise, you're missing my point. Decertification is indeed a nightmare for eighty percent of the league. So much so that without labor price fixing, they cannot survive, or could only survive playing in a B league, or being the Washington Generals to teams like the Rangers and Leafs, the exact same way that most English and Spanish soccer teams are complete jokes when compared to the big boys like Man U and Real Madrid. Decertification would be a pyrric victory for the players, and would be the end for teams like the Devils. Maybe you'll be lucky enough to get $15 million a year from the Rangers if you're Corey Perry (if they could throw $9 milion a year at Bobby Holik ten years ago, $15 mill per year is what a team that can pay as much as it wants would pay for Perry). Otherwise you'll get the $100k salary that a team like Florida could afford to pay you now that all of the other talented players are playing elsewhere.
If you don't believe me, please tell me how Man U has won more than half of the premier league championships over the past twenty years? Hint, it isn't because its management is good at sabremetrics.
I don't know how revenues are generated in English soccer. In the NHL right now, national TV revenues are shared even though some teams clearly generate almost nothing and some teams generate lots of money. But England is different than the US and Canada - English cities are much closer together. It'd be like if the entire NHL were concentrated in the US Northeast.
So yeah, a super league would probably form, but it would not mean the end for the Devils at all, much as how there are still many, many soccer clubs in England despite the fact that Man U is dominant. Furthermore, I don't think many NHL owners are vanity owners - among top teams, the Wings and Rangers are owned by people who would lose money to win a championship, but I don't see many others.
All this is moot - the NHL will never let it get to decertification if the gap is less than $1M per season per team, like it is now.