Just how many times does it have to be repeated? Stop bringing money into this discussion because it won't work in your favor.
First and foremost, you're paying 15$ a month, while the other sub is 13$. You're paying 2$ more and indeed have more rights - the right to create multiple characters on 1 server and to have more characters in total. That's it. That's what the difference between entry level sub and standard sub is and you are clearly informed what is it exactly that you're paying those 2$ for when you choose your subscription tier. Any other rights that you claim you should have are pure entitlement and nothing else.
Second, if you really can't grasp the obvious and still want to argue that just because you're paying a higher monthly subscription all characters you create should have the same rights as a single character of a player that is paying the lower one lets approach the issue in a logical manner. The minimum monthly cost of a single character with full rights is 13$. If we assume that you spend 13$ on your first (or main) character, then you only spend 2$ on all your alts combined. If we assume that you spent an equal amount of money on each of your characters, then with 3 characters you'd only spend 5$ on each of them. Why would they all have the same rights as characters people spend 13$ on? Pay 13$ per month per character.
Third, as far as money is concerned, from the business point of view you, owning 3 houses and paying 15$ a month will never have more value as a customer than 2 people that are paying combined 26$ and could instead own 2 out of your 3 houses. Even if you were to quit the game over this entire issue, 3 other people would take over your 3 plots, paying a combined monthly sub of 39$. All of this based on an assumption that there are no people paying the exact same sub as you do among those affected by the housing crisis. Which I find highly unlikely. Your way of thinking is that of a whale in a F2P cash shop based MMO. Which FFXIV isn't.
Seriously, stop brining money into this debate. You're hurting your own case.
You do realise that the primary reason why SE introduced free server transfers to spread playerbase more evenly across servers wasn't to reduce numbers on high population servers, but to improve numbers on low population servers? Those that people kept proclaiming dead, asking about server merges every 2 or 3 Live Letters? Adding 4 new servers would just contribute to the problem they were trying to deal with.
And stop with this Balmung shit. Not even the entire NA revolves around Balmung and Gilgamesh, and it has no bearing on EU or JP. And yet the housing issues being discussed exist across all 3 markets.