That isn't the hypothetical I'm using to make my point. Obviously if you change the hypothetical you come up with different results, but then it isn't the scenario I'm using as an intuition pump.
Like, what I'm getting at is that there are sometimes policies you want your government to pass, even though more people oppose it than support it and nobody being truly undecided. Not all policy choices are equally important, and not everyone considers all policy choices equally important. A referendum is structurally incapable of enacting policies with minority support, for good or for bad. It's usually for good, true, but there are circumstances where you can do better by making sure that people think that the important policies are implemented, even at the cost of the majority not getting their way on relatively unimportant matters.
In no case in which sufficient amount of people oppose something, a policy can pass. Of course, Im talking about proportional representation systems. In first past the post, what you speak of is possible if that issue is not so critical to that amount of people that they may not vote on it as their #1 issue. Then the opposing party can win with a low margin on some other issue in which they have majority, meanwhile passing that other policy as well. This is an ill of the FPTP system. In proportional representation, that does not happen.
Of course, FPTP itself is something that was implemented to avoid the democracy of the majority, so that's no surprise.
With a single-subject rule, that’s often (but not always) true; without it, it is less true, because policies can be packaged to achieve a combined majority, so long as there isn’t a majority that thinks it is important enough to defeat any part to overcome any support within that majority for other parts. (Even with a single-subject rule, this can sometimes be done, so long as the policies packaged relate to sufficiently closely related subject matter as to fit within the way the rule is applied.)
This is common in legislative bodies, and it works with citizen-legislators, too.
Sure, after the package passes, groups can try to form separate coalitions to pick things out of it; there are methods to protect them, generally (such as putting together a similar coalition to put up a trigger bill that deletes the parts the other groups want to protect conditioned on the other repeal passing, undermining its support.)
> There’s no stable point
Yeah, real world politics is generally not about finding stable equilibria, as much are the things most easily amenable to theoretical analysis.
That means that the majority wants those issues. If 20% of the population wants something, 10% opposes it, and 70% doesnt care if it passes, it means that a majority wants that policy to pass. The majority does not need to be for something explicitly for it to be a majority decision. There has to be more people in a society wanting something than those who dont, and the rest not objecting to that policy. Its still a majority decision.