Earlier quoted context omitted.
Open source would still exist without Stallman and the FSF. There is a practical benefit to open source software and calling people / companies evil / unethical for not open sourcing everything is not as helpful as the FSF may think.
Considering Stallman's Free Software predates "Open Source" I'm not sure it actually would, or if it did, it would likely be less free. And again, helpful to whom? Yes. Stallman's no diplomat or ambassador, but that's not the job he's trying to do.
With Microsoft and Apple the software is commercial and not free, but they do a good job of handholding the customer and working through bugs and technical issues over the phone.