private file sharing solutions

Copy-pasting from an email discussion regarding solutions for sharing large files with multiple remote teams - 

1. Shared Drive - This seems to be the easiest and simplest solution, at least to start with. Most probably you cannot increase individual users beyond 30 GB, but you can use Shared Drives -  https://www.googlecloudcommunity.com/gc/Workspace-Q-A/Trying-to-change-storage-limit-for-members-of-a-group/m-p/421866

Shared Drives currently have no limit, as far as I could see.

2. Single file size limits - With google drive, even shared drives, you have a limit of a few MB for uploading files from the web interface. If you use the Google Drive Sync desktop app, you apparently can go up to 5 TB for individual files. But limited to 750 GB per day. This page also has the explanation for the 100 GB added, "no longer available for new customers"

https://support.google.com/a/answer/172541

3. If more than 5 TB is needed - Advantage of separate server for file-sharing - would be cheaper than google drive or other cloud storage. Disadvantage - would need to choose a server in India or else uploads might be quite slow. After that, if we have https downloads, we could use cloudflare caching to speed up downloads. This apparently works even if the content is behind some login/pw authentication, for example session based auth.