I think in the last 15 years or so, it's had more to do with lack of higher command groups understanding LRS and or how to use it in a asymmetrical battle space. LRS historically was a Division and Corps asset. With the individual modular brigade combat team concept, LRS was being attached to other unit's or being used by a higher HQ as a PSD or in a Force Protection role. Basically BCT commanders normally weren't aware of the LRS capability or simply didn't know how to use them in their battle space.
On my first trip, we had a need for LRS, yet the asset wasn't available, so we were using our Recon platoon or squads from our line companies. Under trained, and under equipped didn't exactly meet the requirements.
I think Army tried to address this with the RSTA concept, but honestly fucked up making them primarily cavalry scout units. Basically a squadron of cav scouts, with one company of light infantry, all of which are supposed to be specifically trained in reconnaissance. Yet, outside of a few Ranger tabs (not reconnaissance training) and NCO's and Officers attending RSLC, there is not much training in reconnaissance, as far as professional development outside of unit level training. This is not a hit on Cav scouts (all though I enjoy fucking with them) but their role is cavalry reconnaissance, not deep and or special reconnaissances. The same way light infantry recon teams are not trained to do SR, that was why we had LRS. I completely disagree with big Army's doing away with LRS. But I understand why they did. They simply didn't know how to use them, and saw them as a wasted asset. It's foolishness.
Even on the SF side, your not just grabbing any ODA and handing them a SR mission. And honestly if commanders were using ground reconnaissance assets as they should, SF wouldn't be able to meet that demand, nor would they want to. So your left with undertrained, underequiped personnel, or you rely on other assets (current ISR with limited to no ground).
As far as the Army is concerned, what really needs to happen, is someone with a serious bio, needs to 1)brief the higher ups on reconnaissance importance, how it's not being used and how it should be in today's modern era. 2) That same dude needs to develop a week (however long) long senior leaders reconnaissance "use" course and get that shit pushed out across big Army. And 3) put together a RECONDO styled course and start training the RSTA dudes (at least their light infantry company or troop, or whatever they call it) to actually do light dismounted special reconnaissance. Maybe even talk a few General officers into bringing back LRS...
I don't know, someone, who might possibly do the same for the USMC to ensure Force Recon has a future in the modern era and going forward. You know, like someone with an impressive background commanding Force Recon platoons and companies, who has the chest salad to prove it...