I was building an in-house infra management platform (including a self hosted AI agent) for companies in a segment that's very careful about its internal IP.

I spoke to the CTO of a well funded company who was spending a few millions on AWS infrastructure per year with budget overshoots etc. I pitched the product to him with all the details and he understood it but at the end of the day, his response was that he'd rather pay AWS for the convenience rather than manage this by himself.