you can argue also the other way around, i.e. Trumpeter is favouring strongly the 1/350 scale. How many kits were released in 1/700 this year?
Maryland, Warspite, Z 30, Z 7, and Barham (= 5)
1/350:
Iwo Jima, Takanami, Taizhou, Montrose, Westminster, Type 071, Fort Worth, Warspite, Indianapolis, Dreadnought, Eskimo, and Belfast (= 12).
For sure, HobbyBoss released some 1/700 kits (most of them already available in 1/350 from Trumpeter), but e.g. their new submarine 1/350 kits are mostly not available in 1/700 in plastic.
But I agree to some point: it is very strange that Trumpeter releases some of their kits in both scales and others only in one.
Lars
