They have so little ammunition, that they have to think 2 or 3 times about every artillery and even more so every anti air shot they have to take. With resserves are shrinking and less and less on the way. It is hard, waging war this way. Russia on the other hand is now in war economy mode. They produce ammunition and tanks way, way faster, than the west.
So if there would be a startup saying, we can build a automated factory, spitting out cheap javelin alike warheads using off the shelf components, would surely get money, if they have some expertise.