All accounts upgrading to Square enix accounts

[Alhanelem]

I was incorporating accounts that do not belong to the original owner in that statement, which would easily be around 50%.

No, it would not even be 2%. Even that is probably very generous.

Even if it were as high as you say, which it isn't, everyone that is doing it is violating the terms of use which forbids account sharing.

Just because you or I might know someone who did it, does not mean half of all players are using a borrowed/friends old account, or an account from another region. There are cities in the world with a murder on a daily or even weekly basis, but that doesn't mean that some huge percentage of the population has committed a crime like that.

For every one person who has bought an account or has an account from another region, there are easily close to if not more than 100 people who have not.

You can't throw around terms like "a lot" when you really don't know how many. Only one person out of the few hundred people I've probably had contact with more than once or twice started by buying their account or aquiring a friend's. And in that one case, it's because they got banned.