They do
I don't want to get too side tracked here, but seriously the units that Porygon listed are not performing well, and its not just tech. Even if I could build 222 from T1 I wouldn't. It would limit my ability to get tanks and in return I would get a low damage lmg on a car that is hard countered by AT nades or a single zook. I might get a panzerwerfer at T3, but it would not be a guarantee.
Also I agree with Mr. Someguy, this thread has become: Obers are OP nothing else can be done.
We all agree Allies suffer in team games and need buffs to bring them in line with Germans (or OKW needs a more punishing income there). But seriously the reinforce cost for paratroopers is nuts. They get insane DPS with the LMG upgrade, and they have huge survivability. They also come with some nice abilities, and can be reinforced on the field with pathfinders putting down radio points (which do not require a squad to build only click the button and start the set up).
If you want Ost to use Grens think about this, to take on paratroopers you need 2 grens (480 mp), and 2 LMG's (120 munitions). On top of that any loses by the Grens require the grens to have another building or vehicle nearby to reinforce. Meanwhile para's can just break contact and reinforce at a free radio beacon.
MG42 is useless because the gunner gets sniped off and does not return fire. To add insult to injury para's can slow the crew and make sure they kill them without them setting up.
Paratroopers need to be looked at and the cost adjusted. This does not mean that Obers do not need nerfing (and they need the bat hard), or that rifle grenades should not be reexamined (I hate how they function), or that in team games allies don't need help (and they clearly do). All of that is true, but let's focus here and point out that paratroopers reinforcement is not reflective of their power.