As somebody who consults with Corporate IT, more often then not I run into the mindset "well if every other company is taking on the same risk then it's a wash". Aka disabling SELinux is what everybody does, we aren't taking on any more risk than anybody else (and it'll make us more competitive because we can iterate faster), so why not? Very few companies think of security as a feature, because so few consumers think of security as a feature.
I agree completely, many many companies are totally fine with accepting that risk due to the trade-off for ease of manageability. But I'm really not, in no small part because the overhead to managing a few computers is totally different than a large corporation with thousands of machines. I just wish my vote counted to Intel (or AMD for that matter), and I could completely disable ME because I'd rather the more difficult management of machines over the much larger attack surface.
Of course it all seems to lead back to monopolies/duopolies being bad for the average consumer. Who knew?