>>270435194
>VRC devs should only allow CC BY-NC-SA 4.0 content

VRC devs don't allow copyrighted content,you even have to check a box when uploading an avatar stating that it belongs to you. Under the DMCA though, The DMCA has "Safe Harbor" provisions in it which limit the liability for a service provider when work is found on their service that infringes upon another's copyright; these exist because the law makers were aware that actively policing a service could be an impossible task and forcing businesses to do so would stifle their growth. the DMCA laws actually put the impetus on the copyright holders to file a formal request when infringing content is found.If VRC actively removed infringing content from their service, they would actually lose their safe harbor provisions and open themselves up to more liability for infringing content found on their service.

tl;dr In order to keep certain legal protections that limit VRC's legal liability from copyright infringement, VRC has to allow the offending material to stay until the copyright owners formally request that VRC devs remove the copyrighted content from the service.