This is a very conflicted topic because in GMS, the economy is trashed. In KMS, prices are reasonable because there are almost no hackers. This means that there is not an influx of mesos therefore prices can remain cheap due to the the limited amount of mesos. In GMS however, prices insanly high due to the hundreds if not thousands of hackers that pollute the servers. This means that they will continuously generate mesos which destroys the economy. This has also led to a destruction of conversion rates.
Take this as and example
In KMS, an arcane weapon is priced at 4 Billion mesos. This is the same as a few hundred dollars.
In GMS, an arcane weapon is also a few hundred dollar however, due to the difference in meso to dollars, if we were to convert an arcane weapon to mesos using a 1 dollar to 900mil rate, we would see it being worth around 200-250 billion mesos.
In the end, 29,999,999,999 meso cap makes sense in KMS due to the low prices because not much of what they have even goes that high. However, the large majority of items in GMS shoot pass 29,999,999,999 mesos making technically useless for us.
TLDR - 30Bil is good in a KMS economy but since our economy is utter trash, it doesn't work.
Also, on the topic of no more fm shops, its hard to say because KMS actually cares about players, they want them to be happy therefore making the auction house very nice and removing the hassle of spending money for a shop. We can't say the same for GMS because removing shops means that there are less people spending money to buy a shop which in end means Nexon America makes less.