Kopernio, a startup aiming to make acquiring PDFs more seamless, has been acquired by Clarivate (owner of Web of Science, Publons, and more):
Kopernio underscores one truism remarkably clearly: You cannot serve as a starting point for discovery, as Web of Science proposes to do, if you cannot provide seamless access to content resources. Trust, authority, starting point, and seamlessness begin to blend together in ways that all discovery providers should take note.
Additional commentary: https://scholarlykitchen.sspnet.org/2018/04/10/clarivate-acquires-kopernio/