Not sure what you were doing, but as an example as a small business we used to have a finance lady that came in to do reconciliation and invoicing, paid her maybe £8k/year? Just replaced her with a Xero/Chargebee integration costing us nothing
Modern billing, accounting, CRM, marketing, etc software just works with each other with a click for basic integration. The days of linking huge bespoke systems together are long gone for any startup.
The productivity gains from software really come once it matures and starts to standardise, that’s where we are with most cloud business systems these days, with tools like IFTTT and Zapier meaning you can create automation without any technical knowledge.
That’s the stuff that’ll make the difference. Not the flashy lights off warehouses or self driving delivery trucks, but a million finance ladies or admin temps doing jobs that are easily automatable with little effort in existing systems.