DCS:WW2 was already receiving other funding at the time of the Kickstarter. Luthier made it clear that the $100,000 was just to give them enough time to polish what they were already building.
To give an idea of the true cost of game development (in North America), the studios I've worked at have typically had a man-month cost of around $11,000.
That's not what each developer gets paid - it's just what the company has to spend to keep an average employee employed. That includes wages, medical coverage, pension contributions and the associated costs of non-development-teams such as HR and admin plus the costs of electricity, utilities and all of the rest.
That means that even a 10 man team costs ~$110,000 per month.
My current team is 60+ people, so go do the math. ;)
Let's assume that it's WAY cheaper to develop games in Russia and the Ukraine. Even if development costs HALF of that, a 10 man team is still going to burn through around $50,000 per month.
I don't know the real numbers for ED and Belsimtek, but my point is just that software development is REALLY expensive and the numbers being thrown around are WAY off base according to my own experience.