KSP has been available to the public for over 3 years now. It was free at first, and then got a very low price tag as features and content started to pour in. But that's the thing, this hasn't been like one of the numerous terrible "early access" projects that plague the indie scene today. Only comparable game I know is Minecraft - people bought this game for whatever the current build offered, because the game was full of fun to be had and well worth the price at at the given time. That said, what constitutes 1.0 to you? As far as I see it, they could just flip 0.25 into 1.0 right now. Sure, we could do with some biomes upgrades for the planets and so on, but nothing major is unfinished to prevent Squad from calling this a full game. Compare that to the numerous early access zombie survival games that don't even have proper zombies implemented a year or two into EA (hello, DayZ) and feature only a skeleton of a fully working game engine. I paid like what, 6 dollars (?) to play a fun rocket launching tech demo back in the day, and today I have a fun super-detailed space program game with an entire solar system to explore. Today KSP costs a lot more, but you also get a lot more, and it's a cohesive package instead of an "alpha". I would love to know what this game is, that receives features and content on a daily basis without a few months of development put into it. Unless of course you're talking about the sort of devs that put out development builds that then take weeks to months until a stable build is out. Because you know, those exist for KSP as well, they just aren't released to the public...