That is correct, to run an on-chain transaction is fairly expensive. There is a lot of ongoing work to address this: Layer 2 solutions like optimistic rollup, a

That is correct, to run an on-chain transaction is fairly expensive. There is a lot of ongoing work to address this: Layer 2 solutions like optimistic rollup, arbitrum, etc. EIP-1559 itself will address this problem on layer 1. But the ecosystem is not mature yet. If/when the scaling problem is finally solved, the legacy financial system will change rapidly.