The US Army has something like 2,100 Blackhawks, so I assume V-280 Valor buy will eventually be somewhere in that neighborhood. And obviously more opportunities to replace Air Force and Navy Blackhawk variants down the road, USMC H-1s / V-22s, etc.
I don't like the "Winner take all" approach of these competitions. Proponents talk about "economies of scale," and the like, but there is never a focus on the benefits of a split buy. Keeping competition in the industrial base, for one. Along with protecting yourself from any technical/reliability issue grounding your entire fleet.
I would have liked to see the US Army do a split buy between the Valor and the Sikorsky-Boeing Defiant-X.