It says this is a project of Mozilla, but it seems like something that would make sense under IANA. Is there a reason why it is not maintained by a standards or

It says this is a project of Mozilla, but it seems like something that would make sense under IANA. Is there a reason why it is not maintained by a standards organization? Maybe the definition of what is/isn't a public suffix is too fuzzy to standardize? edit: After reading https://github.com/sleevi/psl-problems https://github.com/sleevi/psl-problems maybe the standards organizations just don't think it's a good idea