I doubt it will mean a lot. TR fans will still get it on PS4, why wouldn't they? Of course it will sell way less than if it was released on all platforms simultaneously but that's SE's problem to deal with. It will still sell several millions and SE still got that small allowance from MS to help over the disappointment.
You should not confuse the amount of people who bought into the hype with the core fanbase which will always buy the new game. SE will continue to squeeze as much out of the franchise as possible and probably won't fall into the trap of releasing exclusive to the wrong platform again.
If SE learned something valuable from this, the consumer might even profit from it.
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