Ledgers have existed for a long time. Most ledgers are held by private organizations, so the need for a public ledger system seems very niche without a major so

Ledgers have existed for a long time. Most ledgers are held by private organizations, so the need for a public ledger system seems very niche without a major societal change. It also seems much slower than a simple database update, so it can’t scale to all needs. The slowness and increased costs don’t seem worth it for most situations. This relegates blockchain for use as a means to create digital play money for people to gamble with.