Yeah, well... WHICH form of Titanfall are they even talking about? Because if it's APEX I don't really give a damn, no matter how popular it is.
If they make a Titanfall 3 and tie it into Apex Legends like Warzone does with the yearly Call of Duty titles they will reap huge benefits. Don't have to make a yearly title either. Make a normal Titanfall sequel with its normal multiplayer and single player component and tie in new weapons, characters, and/or map into Apex. They will feed into each other creating an ouroboros of infinite money. There should be some benefits in Apex towards buying the new game but I don't think you have to be super draconian about it to hook people into buying the premium stuff.