If the larger company name is "The Meta Org" or "Meta Organization" or such, then .org would grammatically fit well with the name.

The tld splitup of ".com is commercial, .org is non-profits, .co.uk is british websites, .io is indian ocean websites" is pretty much out the window. Only a subset of those still are used consistently, such as ".gov is government-affiliated" and a few ccTLDs like ".cn", ".jp", and ".co.uk" being pretty consistent. Some of them have enforced restrictions (like some european ccTLDs require you to have an address in the country), but many of them don't.

.com, .net, and .org are the wild west and might as well mean nothing.

Someone has pointed meta.com to meta.org