Restrict barbed wire placement to diggable terrain only.
Barbed wire entanglements such as the ones in the game were supposed to be anchored in soft ground (soil, grass, sand). Hammering wooden stakes into concrete, solid rock, or wooden floors is absurd. Therefore, their deployment should be restricted strictly to diggable terrain.
Yeah, 3-legged wooden crosses can also just sit on flat(ish) terrain such as concrete, they don’t have to be embedded in the ground. Easier to move, sure, but you’ll be being shot at while you’re trying to re-situate the barbed wire wood tripods.