The ISP is not analogous to a store.
In the case of the analogy between ISP/zero rating and store/free parking, it certainly is.
If I don't like a store, I can shop at hundreds of other stores.
You do realize that "analogy" doesn't mean "exactly the same thing", don't you? In the analogy, the ISP is giving you something for free just like the store is giving you something for free. You want everyone to have to pay for both. Why would you want to go to a different store, or a different ISP, just because they were giving something to others for free that you weren't interested in having anyway? I see that as incredibly selfish. If they won't give you what YOU want for free, then they shouldn't be able to give anyone what they want for free. You don't want to park in the nearby parking garage, so the store should not be comping parking in that garage to anyone else. There's the analogy.
ISPs are analogous to the government, in that they both hold a monopoly in power over a particular area.
ISPs have no government monopoly and never had. This is a myth. And it is irrelevant for this discussion, because this is a discussion about zero rating and how you don't want it to happen. You think it is evil if an evil company gives something to someone else for free even when you don't want it at all anyway. That's nuts. You think it hurts your ability to access what you do want to, and it actually has nothing to do with it.
If the ISP is allowed to provide preferential service to some companies over others,
We're talking about ZERO RATING, which is giving preferential service to customers who use certain services. It does not give the service preferential treatment. The service is providing the same thing either way. And, in fact, for T-Mobile's zero rating Binge On, the services had to provide the data in the format T-Mobile asked for.
it's the same as a city council accepting bribes in exchange for preferential road construction.
And you're still confusing zero rating with fast lanes.