Yeah, my data is anecdata - I only know one country and mostly small shops. But unless something drastically changed the last years where I was in startup land

Yeah, my data is anecdata - I only know one country and mostly small shops. But unless something drastically changed the last years where I was in startup land - many web developers tended to prefer Linux or Macs, whether they're using Rails, Python, or PHP. In general the bigger or more agency-like the company, the higher the percentage of Windows for developers.