"That expectation does not entitle anybody to anything though."
This is true legally, but not otherwise (socially, practically)
"That is their decision. Without any contract or promise, there is no obligation to anybody."
Again, true legally, but IMHO a really silly position to take overall.
Imagine I provide free electricity to everyone in my town. I encourage everyone to use it. I do it all for free. I'm very careful to ensure the legal framework means i have no obligation, and everyone knows i have no obligations to them legally. They all take me up on it. All the other providers wither and die as a result. 15 years later, i decide to shut it all down on a whim because i want to move on to other things. The lights go out for the town everywhere.
Saying "i have no legal obligations" is true, but expecting people to not be pissed off, complain, and expect me to not do this is at best, naive.
Calling them entitled is even funnier. It's sort of irrelevant if they are entitled or not, after i put them in this position.
Legal obligation is not the only form of obligation, and not even the interesting ones most of the time.
More importantly - society has never survived on legal obligation alone.
I do not think you would enjoy living in a world where legal obligation is the only thing that mattered.