1. NTT is a global ISP with backbone service in many countries and is "the fourth largest telecommunications company in the world in terms of revenue". Check it out for yourselves: https://en.wikipedia.org/wiki/Nippon..._and_Telephone. If SE had chosen to host with another major ISP, this week's DDoS issues might not have happened but choosing an ISP who handles such a large chunk of global internet traffic is not a bad business decision.
2. Along with point number 1, I expect that the 4th largest ISP in the world would have top network security talent and that they have been very active in trying to resolve a DDoS issue that is not only impacting SE customers but any other traffic flowing through their NA routers. I strongly suspect this is a more sophisticated attack than previous ones NTT has faced because they seem to be having a hard time solving this.
3. Not all routes through the US are being hit as hard. Routes in the West going through Seattle have been hardly impacted at all and when they have been, the trouble was resolved within a few minutes. My route is like that and except for the occasional attack on a router in Sacramento, CA, the connection has been fine.
4. When I was working for an ISP, customers would not be credited if there was trouble on an end-point. That included a TV network going down. If it wasn't our equipment at fault, there were no credits issued. Infrequently, occasional customers would get a free movie or something but only because they were belligerent and wouldn't stop harassing the call centre reps. The freebie was just because we needed to get them off the phone so the front line staff could deal with customers who had genuine trouble that could be resolved by us. SE may give something out for similar reasons but I wouldn't count on it.
5. Secure your devices connected to the internet and encourage others to do the same. DDoS stands for Distributed Denial of Service and these attacks are done by the attacker gaining control of many devices connected to the internet and having them all attack at the same time. If your online fridge, toaster, stove, car, router, phone, computer, whatever isn't patched up and you never changed the default password then who knows, maybe your stuff could end up in one of these 'botnets'.
I like FFXIV and have mostly had fun with the people I have met so far. I hope you can all have a smooth gaming experience soon. Please don't take your frustrations out on SE. If anything, NTT might have made some mistakes but I am more inclined to believe that they are dealing with some new and difficult DDoS this time and have just been trying to work toward a solution.