This idea is a big one behind the development of modern crypto currencies. Ideas like "Layer 2", "Zero Knowledge Rollups", and "Parachains" are all built on the idea that not everything that happens needs to be on the main blockchain.
Personally I suspect that eventually a more modern blockchain will become the base level of record, or more likely that we may never settle on a single one, but indeed with proper layering it could all be BTC in the end.
Personally I suspect that eventually a more modern blockchain will become the base level of record, or more likely that we may never settle on a single one, but indeed with proper layering it could all be BTC in the end.