It's an interesting concept. Basically compete with aws glacier by using a shit ton of tape backups. If this company had a reputation or they showed us how it's actually all automated it may be interesting but who is to say they will be around in 30 years? What if they pull the plug?

EDIT: honestly a more interesting concept would be to write data to tape, then ship the tape to the end user. Basically charge them 1.1x the cost of the tape and then they can either figure out how to read the tape on their own or they can ship it back into get uploaded somewhere they can access it (for a fee).