Most Tier 1 backbones have no problem routing things. The problem is that large ISP's like AT&T, Verizon and Comcast own their own backbones, so it's cheaper for them to not use any peers until the last hop possible. However many of these Tier 1 ISP's are also really evil to each other and have been known to route traffic over unfair peering agreements. Cogent and level3 are known for "breaking the internet"
eg:
http://www.telecompetitor.com/comcas...pute-resolved/
https://arstechnica.com/business/201...ernet-quality/
It's important to note that level3 and cogent are usually the villains in peering disputes. In the case of Square-Enix, they primarily use NTT's backbone but that tends to still require people to peer over at least one other backbone.
Like using my non-residential connections, a connection from hurricane electric (Fremont California) gets 5ms to FFXIV's gateway servers, but has to over telia in San Jose. My connection from Arizona goes over Cogent at Phoenix NAP. My local connection goes over Level3 at Seattle.
If I use a few lookingglass systems:
So Miami is going to Ashburn, Virginia before it's routed to San Jose, California. So needless to say that's several hundred miles in the wrong direction. Most other route paths go via Chicago, San Jose or directly to Los Angeles.3 60 ms 59 ms 77 ms ae-3.r20.miamfl02.us.bb.gin.ntt.net (129.250.2.110)
4 87 ms 87 ms 87 ms ae-4.r23.asbnva02.us.bb.gin.ntt.net (129.250.2.86)
5 87 ms 88 ms 86 ms ae-10.r22.snjsca04.us.bb.gin.ntt.net (129.250.6.237)
The only people who should have noticed a drastic change are those who live in the central-california area (where the servers now are) or the people who live in Montreal (where the servers were), everyone else would have been routed through the same gateway systems and with a few exceptions, likely still had the shortest best path.