I probably think badly and therefore I cannot understand the logic "first upload your files to the service, then pay the service for access to your files." It is especially difficult to understand when an SSD with a capacity of about 240 gigabytes costs as much as a couple of months of access to the service.
A home streamer with removable SSDs (it's a streamer, SSDs are actually always used in read mode) looks more convincing to me.
Omnia mea mecum porto.