Also, you should take into account that SAP the company is not just the ERP. It has acquired several big SaaS vendors in the past years (Ariba, SuccessFactors, Concur etc) so many of us may be touching SAP without even realizing it.

Correct. I'm also willing to bet the people on Hacker News are not typically in the circle of businesses that use SAP.

I'm willing to bet that they are.

Do you think there is a huge tendency towards Oracle, Infor or MS Dynamics rather than SAP across hacker news, or are you just assuming that people who go on hacker news aren't in the 'circle of companies' which need an ERP?

Most people on HN probably go work for companies that pay them the best compensation or offer them a good position, not based on what ERP they chose.

You underestimate the reach of SAP and overestimate the "SV-ness" of HN.

SAP Developer/Customer here.

Does that mean most people on HN work for companies either too small for or too competent to outsource an ERP system?

SAP user here... not that I liked it :)