Freedom of movement is the power to exchange goods and services with anyone.
> freedom of speech as power to manipulate masses
Freedom of speech is only a freedom if it is accompanied by a potential hearer's freedom to block speech. Modern platforms do not let you choose what or who you want to hear. Freedom of speech without freedom to choose your censor is anarchy.
> Lack of competition is what lets developer's exert power over users, and while copyleft licenses help with that, they're neither required nor sufficient to prevent abuse of power.
You are ignoring the freedom to modify/fork, plus the requirement of free documentation.