I think the future of wikipedia looks a bit bleak if they drop archive.today now. They need a decent archiver to function. Internet archive is good but its a single group hosted in the US, plus any site with a paywall isn't surviving on the internet archive very well.
They've needed good alternative for awhile and the need is just growing. I wish public libraries could fill the gap but its probably not realistic. We've had legal deposit requirements for non-print media in various jurisdictions for awhile but i'm doubtful how effective it is, nor is it convenient to access or use for wikipedia.