Yeah, that ENTIRE week (was it even a week?) of being able to play in the same region was definitely a perfectly fair amount of time to be in a beta. You're completely right: no ZAM closed beta key winner here deserves any more time since we got to spend SOOO much time in Eorzea already. Yes, that's 100% fair. Sorry for keeping you waiting, I'll move aside so that you can get your week's worth of playtime -- wait, what's that? You get MORE than a week's worth of playtime? Oh...and you get to pick from 2 other regions? Really? Wow. OK. Whatever, man, that's totally fair. After all, we had our turn. An entire week's worth.
I think you'd be a bit better off complaining if you actually paid to be a beta tester or something.
Being a beta tester does not make you entitled to anything nor does it give you any benefits compared to the people who didn't get to beta test.
I'm a beta tester myself and I don't feel I have any right to complain about what's fair or not when it comes to this open beta. If they're not giving beta testers codes by default, then they're making the playing field even and giving everyone an equal chance.