The global financial sector is about 13-19% of the global economy, and 20-30% of the global services sector: https://www.investopedia.com/ask/answers/030515/what-percent...

Which is higher than it should be, but thankfully not 70%...

The above probably includes the accounting industry but not all employee accountants/cashiers embedded in all companies, but even if it did, it would move the needle only a bit (maybe 10% of employees?)