Another important factor for adoption/adoptability is how well the new system integrates with existing deployments of older systems. Ideally it completely interoperates with the older systems, while providing you with additional value right from the start.
Agreed with lgierth and I believe this is what sets IPFS apart from many similar technologies: integration path for existing technologies. As far as I can tell, it has been an important design decision from early on for IPFS.
