Now an ISP, Google not so hot on net neutrality

once again with the HOA analogies. I ask why or how can we have rules which we are agreeing, out loud, we will enforce when and how we see fit. I am told this is normal. We have a two pet limit, but will enforce it only when it is a problem, for example. I say why not have a nuisance rule and drop the phony pet rule. “Well, everyone does it this way”, I am told, or even, “you have to do it this way.”

Any authorities to speak to this relevant point?