Just heard about this: Business Pricing Plans for File Sharing and Governance Platform | Egnyte
They quote $20/user/month (and I can't see a minimum number of users) for their "Business" plan, with "Storage included: Custom" (whatever that means), and it seems supported by rclone via the FTP/SFTP backend: Add egnyte backend support to Rclone - #3 by asdffdsa
Does anyone here have experience with them?