Well real estate is not an issue if you rent it because rent follow inflation so you keep adjusting. Bitcoin is interesting but is definitely not all that matter. A serious layer 1 disruption will wipe away every digital asset. Remember all. In case of serious war the new electronics have 3-5 years life span. Take away south Korea and Taiwan and the entire network is down for a long long long time. How many people store info into optical a-disk? How many just hope a charged capacitor in a SSD will stay there forever or an HDD will keep it's magnetic fields more than 20 years...