Why no capped tome increase?

[HyoMinPark]

PoTD floor 200 farms.
PoTD floor 200 solo (185 or something is current record)
Anima, Zodia, etc farms for ALL jobs
Farm for 999,999,999 gil cap
Max speed mount in all areas
Sightlogs & achievement hunts
Farm Ultimate for 3slot materia 345 weapons for all your jobs (per week)
Complete every single quest in the game (this is actually something I'm working on)
I'm sure there are other things to do too

Or sit in limsa 98.98% of your gametime like 75.8% of my server pop (not even sure what they are doing there and the majority are not even afk).

Thing is, though, people have to be interested in doing all those things to actually stay subbed.

PotD Floor 200 run—okay, reasonable, but for those who have already made it to Floor 200? They may not be interested in doing it a second time.
PotD Floor 200 solo—literally impossible except for possibly RDM. They’re the only job that’s made it to the 190s, last I heard.
Farming relics would require jobs at the appropriate level and interest in the content. Even Zodiacs after being nerfed are still incredibly grindy. Same for Animas.
Gil cap—not really content. And there’s not really any reason to have gil cap because there’s nothing to really sink said gil into.
Max mount speed is obtainable very quickly by just doing daily hunts, A ranks, and S ranks. It doesn’t provide really any longevity.
Sightseeing logs and achievements—not really content, and some achievements are abysmal. Like the Centurio Tiger achievements—3,000 A ranks and 2,000 S ranks. Fulfilling achievements to a completionist level requires banging one’s head against some of the most mind numbing content in the game (10,000 FATEs, anyone?), and if a person isn’t interested, they just won’t do it.
Farming Ultimate is not a very good example at all. ~20 minute fight requiring perfection 90~95% of the time, and it would require a group of 7 other like-minded individuals. I don’t think even a lot of the world first groups for Ultimate would farm that fight 15 times for 15 separate weapons. It’s an endurance test, and some just wanted to do it once, get their title/shiny weapon of choice, and be done with it.
Completing every single quest is content... but some people aren’t interested in sidequests, or have already done all the sidequests for ARR, HW and SB.

Again, all these things listed require an interest in doing to retain subscriptions. If players aren’t interested in grinding out old relics, well, then what is there to keep them subscribed?