That's part of why I've generally been putting quotation marks around the word "corporation."

It's not meaningless though, because the underlying structure will likely remain essentially the same as it was when it was merely a corporation. And the relationship between the "government" and its "citizens" will have evolved from a relationship between a business and its customers/clients, and will undoubtedly retain some aspects of that. Most notably, the whole concept of public servants will vanish. Instead, the "government" will offer some specific services to potential citizens-as-customers, who can take them or leave them. Or, additionally or possibly even alternatively, the "government" will demand specific things of citizens-as-employees who will have the "choice" of following their demands or seeking employment-as-citizenship elsewhere.

In either event (or any other - this can't possibly be an exhaustive list), the basic dynamic between "government" and "citizen" will be notably different from any of the ones we've seen before (though likely broadly most similar to feudalism).