Given that Yoshida himself keeps referring to the game as a Theme Park MMO, it's probably helpful to keep in mind what actual Theme Parks are like. Your admission gets you in the door and gets you on all the rides, but they're also full of "Optional Services", like souvenir shops, commemorative photos, concession stands, and even premium passes that get let you jump ahead in line. So even though everyone pays an admission to get into the park, people who pay more will get more extra benefits that don't stop everyone else from still experiencing all the core attractions.

I think that's literally the model that they're going for in this game. I think they see the things they've added as the equivalent to souvenir shops and commemorative photo ops that people who really enjoy their FFXIV experience may want to buy as mementos. Their main job is to make sure that the most people possible keep wanting to come back to the theme park, and are having fun. (Clearly these additions may preclude some people from having fun, but they'll have to look at the "visitors" on the whole.)