> Trademarks are country-specific, not global like domains.

Domains are also subject to local law! For ccTLDs, it's usually that of the country in question; for gTLD, to my knowledge the US has effective jurisdiction (through ICANN) over at least some of the popular gTLDs such as .com and .net.

"Local law" in this case doesn't just include actual laws on the books, but also the risk and cost of getting sued by either a trademark holder or a non-trademark-infringing domain owner.

This is exactly the type of issue that people usually don't consider when picking a TLD, vanity or otherwise.