I discovered Liquid recently, and it looks interesting. This was predicted by Hal Finney
Actually there is a very good reason for Bitcoin-backed banks to exist, issuing their own digital cash currency, redeemable for bitcoins. Bitcoin itself cannot scale to have every single financial transaction in the world be broadcast to everyone and included in the block chain. There needs to be a secondary level of payment systems which is lighter weight and more efficient. Likewise, the time needed for Bitcoin transactions to finalize will be impractical for medium to large value purchases.
Neither satoshi or Finney said that block size should increase. Bitcoin cannot scale this way. This will be only a temporary solution until you need to increase again.
Include all transactions in the blockchain is not necessary
Very interesting. By chance, I had already seen this Liquid, but I had never paid much attention to it.