How about archiving all text written by everyone? Napkin calc: if every person in the world (10 billion people) types for 8 hours every day, at 200 characters per minute, 4 bytes per character, we need 10000000000 * 365 * 8 * 60 * 200 * 4 = on the order of 1 exabyte per year. That's a huge overestimate, but the world's storage capacity is growing much faster than even that.
Or think of it this way: the lifetime output of George R.R. Martin is <10MB. The output of 100000 writers like him could fit in a 1TB drive ($50). If everyone in the US was as prolific as GRRM, you could archive their lifetime output for $150000. Everyone in the world, $5 million. That's 1/20th of the investment that Juicero got.