Well, first of all, of course all a company cares about is making money. Without money, they can't make more games, or more of whatever they're business is. Some companies care more about their fans than others, but at the end of the day, every single company in exsistance wants to make money in some way in order to keep going. Even charities; all they want is money because otherwise they can't support anything.
And about the money thing; yeah, sure, it gets expensive if you're just getting into the series today, but from my perspective, it doesn't seem like a lot; I bought each game as each one came out. Well, sort of. I played KH1 in 2004 when I randomly stumbled upon it as a kid, then KH2 two years later, then Chain of Memories for the GBA shortly after. So, that's about thirty dollars spent for one day, then about forty or so spent two years later. They were for systems I already had owned and was given to by my parents as gifts, so to their eyes, adding to my collection wasn't that crippling of a desicion considering the timeframe. Then, this continued on and on for the other games, so I won't get into it further. But, you don't HAVE to buy the games. You don't NEED them. It's your own fault for spending hundreds of dollars for buying the stuff, not Squares. They didn't threaten you or anything to buy it.
But yeah, to YOU it may seen expensive, but it's all about perspective. Sorry to say that, if you don't have the money, or you can't afford to spend money elsewhere, then tough. That's how it is with everything in the world. I have a job, so I can easily pay for every game that I want that comes out, but it's at a steady pace, so I'm not crippling my savings by doing this.
And now about the story; I love it. It's got that ridiculous complexity that I love, but isn't TOO complex. It takes a little homework to understand, but it isn't hard to follow whatsoever in my eyes. If you want confusing, play the Metal Gear Solid games if you haven't already. Speaking of, I felt that it should have ended at MGS4, but I still loved all the games after that expanded the world and story events, and I loved discovering what they were going to show next. The same with KH; I love every game because it expands on things that we didn't know yet, and makes what was at first a simple universe into a much bigger one. But anyway, the story is a matter of personal opinion with any series. So, with that said, I will gladly buy 2.8. I want KH3 as much as you, man, but I like to look at this as Square Enix giving us one last thing to hold us over before KH3 is released and is still being developed, instead of just a cash grab or letting us sit here with no news at all while we wait.
But, at the end of the day, you're allowed to hate on it's flaws as much as you want. It clearly has some. This isn't me trying to change your mind, but just giving you my two cents on this.