What happens when hard drives become ultra cheap in the future? Say there's a 4TB hard drive available for $50 in a few years. Will this hurt the price of SJCX over time?
I don't think SJCX will be hurt if hard drive costs cheaper. SJCX reflects the value of Storj system - the decentralized cloud storage system, if Storj has 10k, 100k users(most of them share hard drive space), the price of SJCX won't be hurt but will be very expensive(0.001+ or even higher). At that time, we will spend less money/SJCX to pay more hard drive space.
The other similar case is bitcoin ASIC miner. (I am not sure this example is a decent argument or not) Does cheaper miners hurt BTC price? I remember in 2012, when there were no ASIC miners, btc was super cheap. In 2013-2014, lots of ASIC miners were shipped, many ppl worried about BTC price would go down. But btc had a huge price move from 60-200 USD to highest 1200 USD.