Germany has indeed money for techs (all countries saving Italy and Sparrings of the Far East have enough). Air/naval tech is not so bad for germans (roll 1 tech team round one and even supersubs and improved shipyards can be used), and anyway 4 usable of 6 means some people will still try it for HBs. Also Germans could simply ignore HBs tech and buy normal bombers for SBR London and soviet ICs
As for USA, it’s not them who japs will bomb, it’s soviets as I said, and soviets will have 15-20 less IPCs to spend in repairings and units than germans. Also, nothing prevents a japanese bomber SBR cau, landing at ger and then start merry SBRs on London also wink In fact, Japan, being the richer country of the game (15+ economic advantage over the richer allied nation), can invest both in tech and bombers
Ok, let’s list what techs each power can use, I list each power if the investment is worth it:
Improved arty: Ger, Sov
Rockets: Ger, Sov, Jap, UK, Ita
Paratroopers: Ger, Jap, UK, USA
Increased fact: Ger, Sov, Jap, UK
War bonds: Ger, Sov, Jap, UK, Ita, USA
Mech inf: Ger, Sov, Jap
Super subs: Jap, UK, Ita, USA
Jet fighters: Ger, Jap, UK, USA
Improved shipyards: Jap, UK, Ita, USA
Radar: Ger, Sov, Ita
LRA: Ger, Jap, UK, USA
H Bombers: Ger, Sov, Jap, UK, Ita, USA
Germany has 6/6 on land table and 4/6 on air/naval, and shouldn’t choose air/naval in most cases. All in all, Allies have a much higher chance of getting Heavy Bombers and turning the tide of the game with them. Even if Allies miss H Bombers they will get good enough techs to make the tech IPCs worth it, but Germany can’t put IPCs into Air/naval table without a high risk of wasting valuable IPCs. With UK and US going for air/naval table and Japan going for it as well, you still have a 50-100% higher chance for Allies, enough to say tech favours allies.