Their about page[0] is interesting.
> "Pika is building a world where third-party libraries can be loaded, cached, and shared across sites" ... "With ESM and cross-origin caching, we can create a world where sites can share cached dependencies."
This is an interesting angle on a package registry. The goal seems difficult to achieve as well since the common web cache as we know it is dying[1]. It seems like we'd need some sort of "dependency" support for web browsers if we'd ever want to achieve it.