Microsoft has a trillion dollars in liability now because every historical OS is illegal, and every adult user of that historical OS (that you don't ask for their age) is a monetary fine.
$2500 fine for Microsoft for letting me continue use Windows 10 in Colorado, cause they never asked my age.
Also hilariously the law openly FORBIDS checking the user's identity to verify age. It says you MUST NOT collect any more information than is necessary to comply with the law. And complying with the law only requires that you ASK the user to TELL YOU their age, so my non-lawyer take is that if you do anything else like checking ID you can and probably will be prosecuted
