I used to work in television. Sky TV in the UK uses a platform called OpenTV, which like anything with "open" in the name is a proprietary vertical-market app that charges thousands of dollars per seat per year. One part of the content chain is a compiler that's supplied as a Windows binary. That bit ran immaculately under Wine 0.9.something on CentOS, saving us a few Windows licenses.

tl;dr Wine is usable for production work, anyone who claims it isn't is simply incorrect.