Over the years I've worked in many different places both small and huge -- only two considered code quality as even remotely important. One being an open source project and the other was very heavily involved in open source.

All commercial code of any reasonable size that I've seen has been dreadful. Complex interdependencies, little regard for consistency and way too much legacy laying around to surprise the programmers.

I no longer believe that any closed source code can be expected to execute properly.