[StavrosK]

Considering it's already registered, I'd say it's possible:

https://whois.domaintools.com/xn--gogle-kye.com

[vbezhenar]

Thanks, I was wrong. That's even worse than I thought.

[StavrosK]

It looks like Google got all lookalikes, because I just tried with a Greek ο and that's also registered by them.