I’m quite late to this conversation, but my thought is this:
The counter to this German bomber strategy is to choose not to use it, and to avoid playing against players who do. I mean this with all respect!
I can speak for myself, and probably many others, in that I don’t play A&A purely as a series of mathematical equations. If that were the case, there are plenty of other games out there to scratch that particular itch. I play because I’m also interested in history, as well as the history of warfare, and World War II in particular.
I’m always a bit suspicious of the constant search to discover a mechanical ‘break’ in this (very elegant) game. If I learned I could win every time by buying 20 infantry every round for Germany, personally I won’t just start buying 20 infantry a round every turn until someone stops me. That’s not my definition of fun. For some, it is, and that’s fine - diversity is a beautiful thing.
Give me 6 infantry, an artillery, 2 mech infantry, 2 armor, a fighter, and a destroyer for 60 IPCs as Germany. If I’m feeling whimsical or aggressive, replace the 2 armor with a bomber. That’s my definition of dark skies!
When I read through this thread, not once did I start considering that I should try it as a strategy - why would I? Part of the enjoyment - for me - is replicating/advancing themes from warfare conducted early in the last century. If anything, it helped me realize that I should buy a few more bombers, but that’s about the extent of it.
Some see this as as a dice game with strategy - I choose to see it as a strategy game with dice. Mass purchases of one unit for the purpose of maximizing movement and mathematical assurance, in my opinion, shift the game toward the former. Again, a matter of personal preference.