Because Azure customers are companies that still, in 2026 only use Windows. Anyone else uses something else. Turns out, companies like that don't tend to have the best engineering teams. So moving an entire cloud infrastructure from Azure to say AWS, probably is either really expensive, really risky or too disruptive to do for the type of engineering team that Azure customers have. I would expect MS to bleed from this slowly for a long time until they actually fix it. I seriously doubt they ever will but stranger things have happened.
Turns out outside companies shipping software products aspiring to be the next Google or Apple, most companies that work outside software industry also need software to run their business and they couldn't care less about HN technology cool factor.
They use whatever they can to ship their products into trucks, outsourcing their IT and development costs , and that is about it.