A file viewing service... for Dropbox Business users?
I would view this as a clever and significant expansion of what DropBox can already do. Instead of being a focused on file storage and delivery, it's become a file display site, managing the downloads to display parts of large files that are too large for today's new, reduced memory PCs or older, limited memory PCs. The product manager in this blog makes it sound like Infinite is aimed more at Dropbox Business users, not individual users. https://www.dropbox.com/sh/w1ik8s961xqll72/AAC78bRfPQm1qirxeL3Kkr5ua/~Dropbox%20Open%20Blog%20Posts/2016_Dropbox_Project_Infinite_Embargo.pdf?dl=0