it'll be a dead duck in a year when the good stuff comes along...
S
Let me expand on my comment.
Yes, while in 5 years (not 1 year), the DC-6 line will not be popular, during its heyday (1955-1960), 75/month rather than 25/month would have sold.
Since nearly 1/2 of the player base is flying DC-6, to be very conservative, let's say 200 players, in the 5 years, it would have meant 3000 new DC-6 produced.
3000 DC-6 between 200 players would have meant each player could be flying 15 additional DC-6, rather than being sent to 6 fleet hell of leftovers. And maybe extra 50 players would have survived the first decade.