From the Executive Summary (page 3/6 of the PDF) of the document:
…the Internet is in some danger of splintering or breaking up into loosely coupled islands of connectivity. A number of potentially troubling trends driven by technological developments, government policies and commercial practices have been rippling across the Internet’s layers….
The growth of these concerns does not indicate a pending cataclysm. The Internet remains stable and generally open and secure in its foundations, and it is morphing and incorporating new capabilities that open up extraordinary new horizons, from the Internet of Things and services to the spread of block chain technology and beyond. … But there are challenges accumulating which, if left unattended, could chip away to varying degrees at the Internet’s enormous capacity to facilitate human progress. We need to take stock of these….
The purpose of this document is to contribute to the emergence of a common baseline understanding of Internet fragmentation. It maps the landscape of some of the key trends and practices that have been variously described as constituting Internet fragmentation and highlights 28 examples.
Cross-posted on Law Library Blog.