That's your experience, and highly subjective. And yes, I deploy code to dozens of enterprise servers for a global company. And that company is looking into Rails, not PHP.
My point isn't so much rails vs php, but about the non-technical difficulties in getting major infrastructure changes done (especially if it's for a minor project) . I'm sure it'd be equally hard to get a ASP.NET MVC stack set up at a company with a big RoR setup already in place.