They're not going to focus on massive Raid releases this early in the game's life, there's simply too much else they have on their plate. It's not about creating a gigantic end game, it's about filling out the overall game as a whole and the extra systems that portions of the population want.

They extend a raid for the Raiders, add some dungeons for the so inclined, adjust/fix issues and improve QoL for all players... and then go about adding systems for those 'not' interested in end game the same way. Housing and vanity gear system are prime examples, and are likely to be followed by other non-raid/dungeon oriented content. Gold saucer rings a bell (whenever we get that much desired addition).

It's not all about raiding, and they can't afford to make it so.