I am changing the movement calculations for speed and acceleration so that you will not need so many floatrons as the game progresses. This will also make it so that your maximum speed can be increased simply by adding more thrust. These changes will be in the next update.
However, floatrons will always be sold in shops! This slightly reduces the RNG and of course, you can always try to forge them.
Thanks for the feedback! I will keep an eye on the floatron drop rate as more and more modules are added to the game.