Still does not change the fact that its a Public Service they offer to people for convenience while traveling underground, they do not have to offer Cell/Internet while on their transit, in a sense its privately owned, its not like they shut down a cell provider or filtered a provider in the area.
While it may be governement owned its by no means a RIGHT to us for them to install a means for us to use our devices while traveling.
I’d agree with you 100% if it was a cell providers service being used that they told them to shut down as its a service you pay for, but im assuming its simply a “repeater” type deal they set up in which case they have every right to turn it off if they so choose. To use that service is not a right.
Again they did not shut down anyones means to assemble, while outside of the subway anyone/everyone could get ahold of that information, the government did not block it, they did not block the ability to obtain that information through ones own means
Again when they start telling cell providers and ISP’s to block and filter things then it becomes an issue.