If SE worked smart, they could absolutely crack down hard on the gil botting and farming scene as a whole.

The problem is that it would cost them a not insignificant amount of manpower and development time to do it. The nail in the coffin is that SE won't get any actual return on said investment.

It was a *FAR* bigger issue in FFXI and nothing of note was ever done there that I'm aware of. It's a sad reality of modern gaming unfortunately.