I was just thinking about the tactical role that the TB-2 actually do.
I think what TB-2 does is neutralize shoot and scoot. Many ground forces works by the logic of short emissions and immediate movement afterwards to avoid counter fire. This applies to radars, jammers, and artillery.
With persistent long range yet narrow field of view sensors, any long range detectable event would have such sensors directed on it, tracking opponents out of that.
What this basically means is that Radar SHORAD with weapons range shorter than TB-2 sensor range near the front would eventually get tracked unless kept in reserve completely. Attempts at hiding after being tracked does not work, as cases of Pantsirs hit while under buildings and Tors blown up in garages attests. Other weapons like MRLS is also the logical target for such a system, as the destruction of Smerch in Armenia shows.
Long range optical sensors are just far cheaper than things like hypersonic munitions for hitting shoot and scoot opponents, weather permitting.
Even when long range munitions is unavailable, just keeping tabs on opponent long range high value assets can be quite useful.
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Ground forces will need to adapt tactically with the understanding that rear line emissions will be tracked in good weather and one need planned post emissions maneuver to make TB-2 lose track.
