One of the creators of unpkg.com is considering a fork of the registry: https://twitter.com/mjackson/status/1119355707055165441
Meanwhile, yarn (a popular alternative to the npm client), uses a proxy to NPM so they can change the default registry of all yarn clients, if they choose to.
As it stands, npm is the centralized source of truth for all our JS packages, and historical versions. We have no guarantees about the future of npm. Aside from a relatively clean history, we have no reason to trust them. For every dollar of VC money that they have taken, we have a reason to believe the registry won't last in its current form. This is scary.