This is a perfect example of why people should never buy into games released in an episodic nature. (Like Minecraft: Story Mode for instance, although only using that as an example of the practice.)
It should also hit home to gamers that this is very clear evidence that it's BECAUSE gamers decide to back these kinds of methods to fleece your cash from your wallet before the work is completed that it's even an issue at all. IE: We're doing it to ourselves. Well, you're doing it to yourselves. I'm ignoring them until they're completed.
Imagine if most people insisted on waiting for a game to be completely finished before buying it. Why, all these episodic trash games (my opinion of the practice) would do the same as the one in the link. At which point the developer (And publisher) would have to either get back to finishing what they started before trying to hand it off to their customers or simply go bankrupt. I can't say I'd feel too sorry if they went bankrupt. Sorry if that offends anyone but I can't and won't fake feeling something I don't.
If you're going to do a game like this, then make damned sure you're going to finish what you start. You can prove this by finishing the damned thing regardless of whether or not you feel enough people are buying the game. If you do finish it, great! People like me, if we were interested in the game in the first place, will probably end up buying the completed version. The boycott in this case is only until YOU finish your job.
Let's be serious here. If you're trying to make money like this, and you cancel your game half way through, what have you done? You've essentially lined up and BITCHSLAPPED every person that gave you money for the portions you DID release. Guess what? You better make sure your next game is INSANELY GOOD and the most interesting thing this side of the galaxy because you'll now have a reputation for not delivering on your promises. And the people that gave you money this time around are likely going to be on this side of the boycott fence when you release the first episode of your next great game.
Keep in mind, this also goes for the other annoying practice of game devs that insist on linking their games together with big ass cliffhangers at the end of each one. Failing to finish your little trilogy, or whatever, leaves the same kind of bitter taste in the mouths of your fans. (As a shenmue fan I can definitely assure you this happens. And waiting a decade before getting around to finishing it, while appreciated by those who didn't die of old age while waiting, isn't going to completely clear your record. >_>)