You, as an individual, can choose to run and use Skype or an alternative communication system. You, as an individual, do not have the chance to force your telco to change to another communication system.
You cannot force your waiter to eat meat neither not to eat meat, but that does not prevent you from being a strict vegan and yet being served by that waiter.
No, but you as an individual don't have to pay your telco money. RMS could opt out of having a telephone number and simply use whatever horrid communication system has a GNU license, just like he does with Skype.
No I can't force my waiter to not eat meat, but when someone says they are vegan and then orders a meal that involves fossil fuel or animal fertilizer to grow and transport those vegetables they look like pretentious assholes to anyone who knows how the world works. When vegans start avoiding pavement and stop living in ancient animal habitats I'll start listening to their arguments about animal welfare.
Same with RMS, when he stops using non-free software I'll start caring what he thinks about free software. Until then he comes off like an ass. Just like the mormons who knock on my door talking about a message of love and then spread a message of hate to any man who wants to marry a man.
"I'm a Christian, unless you're gay"
"I'm a free software advocate, unless I want to travel by air, or withdraw money from a bank"
"I'm a vegan, unless the killing of the animal is one step removed"
It's all the same pretention and I don't want any part of it. For the most part I don't even care if people hold those mutually exclusive points of view, I just don't want to hear about it. I know lots of FSF advocates, vegans and Christians who simply shut up about it, I'm hoping that RMS simply becomes one of those people.
You, as an individual, can choose to run and use Skype or an alternative communication system. You, as an individual, do not have the chance to force your telco to change to another communication system.
You cannot force your waiter to eat meat neither not to eat meat, but that does not prevent you from being a strict vegan and yet being served by that waiter.