Bitcoin doesn't offer the protection and services provided by banks and stock exchanges, let alone the transaction volume.

Employment is a good point, as financial companies employ millions of people but then you would need to add in the additional metrics from companies and OPEX/electrical/hardware related to blockchain startups.

All of that is mostly irrelevant though, because the principle design of "Proof of Work" software is to maximize the inefficiency and operational waste of transactions as the network gains users and as time goes on, without any increase in network capacity. The other curious design choice is to decrease the economic output (production) as more work enters the network, which seems quite malicious, but few people have bothered to read and comprehend the design choices in "Satoshi's white paper".