They had plans for a bigger game, but they needed Kickstarter money for it. They tried to get this Kickstarted but failed, so THEN they ran out of money. Their KS campaign wasn't successful, so they simply had no money to do any kind of ending other than what is in it now. It's not about being "experienced" or "responsible", they made a wager with their own money: they developed a small portion of the game to showcase what they wanted to do -> they did this with their own money -> they went to Kickstarter to hopefully get funding so that they could develop the rest of the game -> Kickstarter failed, but they had no money left after already developing the game with their own money for however long they had worked on it -> they didn't really even have money to develop any kind of ending as they had already spent all of it to get the current build done to showcase the game during the Kickstarter campaign, so they just put the game out to Steam as it was + a text screen ending (which is wrong of them without a warning).A more experienced/responsible dev would have realized they were almost out of money and worked to create an appropriate end point.
First of all, read the fucking OP. This game TRIED to get Kickstarter backing but their Kickstarter campaign failed, meaning no one ever gave them any money to develop this. This is actually a perfect example of how Kickstarter can HELP and be AN AWESOME THING. Based on impressions about the game, the four hours that they had for this game are actually quite well developed & fun. It just ends out of nowhere. Had they had Kickstarter funding, they could've developed a full game with a proper ending.first of all this.
Second, there are plenty of successful Kickstarted games (& projects other than games) that turned out good or even great. FTL, Giana Sisters, Sequence & Shadowrun Returns, for example, and we are getting games like Wasteland 2, Dead State, Pier Solar HD, Broken Sword 5 and such soon and have games like Project Eternity and Torment 2 that are coming further along the way.