rob2218 wrote:I don't' know where you got this impressions, Rob? What you describe is what Wetransfer is. Dropbox - like OneDrive, Google Drive, iCloud etc is "permanent" cloud storage. It is as permanent as making your payment [if over the "free" amount of space] and the company surviving. Highly unlikely any of the companies will not survive...at worst, they will merge into some other company.
Besides....Dropbox was and STILL is designed as a "TEMPORARY HOLDING" site where you put a file or folder, upload it and download it and be done with it................NOT as a site to permanently house important architectural 3d complicated database models.
Sorry for being late to the party, but presumably you have since noticed Graphisoft's hosted BIMcloud (SaaS) offering... https://Graphisoft.com/solutions/BIMcloud