Permanent, until they go out of business. We should just standardize on archive.org and figure out a way to distribute redundant copies of its data around in such a way that it can survive even if the original Internet Archive goes down. I hate to push blockchain stuff, but something like IPFS might actually be a good idea here.
It’s run by the Harvard Law Library (i.e. backed by a multibillion-dollar university that is substantially older than the country it’s located in) and operated as a decentralized network across multiple public and private library systems. Like any service, it might shut down due to lack of interest, but I doubt Harvard Law is at risk of “going out of business”.
Wait until they publicly criticise Musk.