I see what you mean, but I think that "workplace" specifically refers to the context of the workplace, so that an employer cannot use AI to monitor the employees, even if they have been pressured to agree to such a monitoring. I think this is unrelated to "commercially offering services which can detect emotions".

But then I don't get the spirit of that limitation, as it should be just as applicable to TVs listening in on your conversations and trying to infer your emotions. Then again, I guess that for these cases there are other rules in place which prohibit doing this without the explicit consent of the user.