Quote Originally Posted by KisaiTenshi View Post
As for killing their business. Just prevent one-sided/uneven trades and limit Gil transfers to 10000gil/day per level acquired. It's not that hard to 95% percentile check the current market to see if someone is making uneven trades.
If you were to limit gil trades, you'd also need to limit the amount you can sell cheap items on the Market. It was done a lot in FFXI where you would see items worth a couple of gil being sold for millions as a transfer service for the RMTs. (the AH tax wasn't enough for them to care)