I dont know whether they 'oppose' the software ideals that stallman stands for or not.

I agree very strongly with Stallman and the points he regularly makes regarding the dangerous of proprietary software, and I am very grateful for the things he has done to push his ideals and to increase awareness of the issues and dangers surrounding copyright abuse and the freedom of software users.

I also create and sell proprietary software, and I disagree with him that it is immoral to do so.

No need to oppose him, I can simply disagree with his conclusions while agreeing with a very large number of the points that he makes.