That seems like a typical Planet Zoo illness though. Ever since the game came out, us hard core players are getting anxiety that the support might end soon. I can not exclude myself from it. Maybe it is because it's kind of a new concept to me that games are only supported for such a short period of time. I mean, even before EA released unfinished base games we had 4 years of support.
Lets just hope that the new DLC explodes in sales and long term engagement of players and Frontier is putting another year or two of support on top.
Yea, we all know it has to end somewhere and probably will if it is not profitable for Frontier anymore. Always a hard hit on the players that keep playing the game long term.
I hope you are right about the additional sales and engagement of the playes, though I am not sure if it will be enough to hold attention of the more casual players. The gaming industry is so big that the alternation of games people play is ever changing and most people do not stay with just a few games. There is always something new to play. Luckily for us, it seems many people are comming back this time. So I am hopeful.