Zhab, I think you are right with your concerns. However you need to remember - Xenonauts and the Firaxis remake are going to be the only two new Squad Based tactical games out there on the market. They are only going to have each other to 'compete' with.
However, I am nonetheless glad we not only have Xenonauts, a game being made by fans and created purely out of passion, but I am also glad that Firaxis got hold of the X-com licence before someone like EA...that would be a sad day indeed. I'll be playing both, and I am sure every other fan will be dying to get their hands on both as well.