Earlier quoted context omitted.
"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 caref…
This is a bad analogy. We are talking about building a very simple Docker image. It is more like you went around your neighborhood and turned peoples lights on in the evening, then stopped. Sure, it’s a lost convenience, but people can easily choose to just… push the button themselves. Or pay somebody to continue doing it for them. Or get a timer. It’s really not a big deal, and there are plenty of alternatives.
Then I decide to stop. It doesn't really matter why, I wasn't getting paid or had not made any sort of formal agreement or promise, I just don't want to do it anymore. Now I shovel my sidewalk to the property line exactly and that's it. Hey, that's my legal obligation; I don't need to do any more! Mr. Johnson now has a lot more trouble getting out of his house; we see him a lot less. The baby is crying while new mom slips around trying to load up strollers and diaper bags and a car seat. The snowbirds just got fined by city bylaw for not clearing their walk. That dad's school trip is just a little longer, colder and unpleasant.
Hey, this isn't my fault! All those people took my effort for granted; I never promised to shovel their walks! They have no basis to judge me! But you better believe that this decision reduced their assessment that I'm a "good neighbour". Community is built mostly on implicit agreements, norms and conventions that are established through practice & conduct over time. You're arguing the right/wrong of this in the face of legal formalizations, while others are just saying it is a fact, not weighing the benefits and obligations.