I'm not sure what you mean by "collaborate like." We use it like it's just on a shared hard drive and maintain our own system of file folders and naming conventions. Most of our long-lived, shared projects are now Sketch files (the workflow is far more baked than XD), but these are not dependent on a proprietary file system to work. It doesn't currently offer a Mac OS based share link feature which is annoying, considering Dropbox does offer that convenience. If you're using CC Files as a stock/asset reserve, I do not envy you. OneDrive, or any other service, would not be equivalent in ease.
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