How to store unlimited pictures and videos for free without losing original quality?

Question

My goal is to have unlimited Photo and Video storage with priority being

1. Ease of management
2. $Free$ (excluding local hardware if necessary).
3. Resiliency of "high quality" photo and video
4. Resiliency of original (highest) quality photo and video.

Note: #4 is called out separately, because I don't believe there is currently a free, unlimited quantity/quality cloud solution for photos and videos. Although I don't want to lose #4, it wouldn't be detrimental as long as I had #3.

• Must support storing photos/videos from Android, IOS, and Windows. Photos/videos from other dumb sources (Camera, GoPro, Scanner, etc.), which I would assume would be by dropping in a folder on Windows. Would be nice if the solution worked for Mac and/or Linux. Must support family of users. Bonus if can consider each users privacy.
• Must have at least 3 copies not including copies on mobile devices. For example: (Cloud + Local + Local Backup) or (CloudVendorA + CloudVendorB + Local).
• Should be clear when something is wrong (e.g. 3 copies of X do not exist)
• Should be able to rename files without making copies.
• Should be able to control backup over cellular, wifi, and local network.
• Should not have to physically connect mobile devices.
• Would be nice to control what stays local on device. All devices will not be able to store the entire library due to size constraints.
• Would be nice to be able to edit/tag metadata on the file across all 3 copies.

Answer 1

Partial solution:

Google Photos will back up unlimited quantity photos and videos with a cap on quality:

Back up unlimited photos and videos for free, up to 16MP and 1080p HD. Access them from any phone, tablet, or computer on photos.google.com – your photos will be safe, secure, and always with you.

Amazon Photos: If you have Amazon Prime, Amazon Photos will back up unlimited quantity of photos with no cap on quality, but will not store videos for free. Personally, I consider this free because I will always have Prime for all the other benefits (shipping, music, video, etc.)

Possible further solutions. Need to work out orchestration.

• Need Phone to PC auto transfer of high quality video
• Use Google Sync and Photos windows app to transfer photos to PC.
• Use Amazon Photos windows app to transfer high quality photos to PC.
• Use PC Backup software or sync software to backup folder(s). Could also benefit from versioning (no auto deletes) to save from user error or cloud error.