Has anyone ever actually met a COBOL programmer? It seems like the teachers tale of someone cracking their head open while swinging on their chair - presumably they exist but there can't be that many of them?
I think the field of tech is more segmented than many realize (in terms of culture, technology, even geography to an extent) For example, I've got a decent-sized network and I've only ever met one person who works in government tech. And it wasn't through that network. But you can't tell me the government doesn't have legions of people working on its systems. Even talking with this friend about work is like speaking…
SAP is another ERP parallel universe, with its own language (ABAP), industry certification schemes, conferences, publications, culture...
These vendors specialize in solving the nexus of unfun problems that sit at the heart of every large organization (invoicing & expenses, accounting, payroll, budgeting & forecasting, financial statements…) and I believe them to be quite well insulated from the forces of open source and consumerization that have shaped the wider industry, because there is no consumer/hobbyist path to creating an alternative. Workday has come closest.