Care to explain how easy it is to setup your own cloud platform that can sync all this content from any device and has the necessary redundancy and security options. Obviously sharing would be important, would need to be able to easily collaborate with others, sharing photo albums etc. Some versioning options would be preferable also.

Needs to be very simple so my grandmother can build it, and cheap. No maintenance, set and forget. I assume there will be apps available for all her devices to quickly go through the process or will she need to create them? It needs to be easy to search for content and stream on any device at any time without fail.

She doesn’t care about ‘owning digital movies’ or the exaggerated threat of her accounts being closed. She's is much more likely to accidentally lose her own content managing it herself. She just wants to watch movies, how much will it cost to own all that content? Less the $10/month?

No professionals so let’s keep instructions basic and preferably just using a single blank drive with no content.

It must bother you that people don’t grow their own food? That they can’t manage their shit and need to buy it from a store?