What lack of sales? MS had to complete another FSX production run not quite 2 years ago, to meet retail demand, and the shelves are already drying up again....The lack of sales...
From what I have gathered from folks involved with ACES, their demise was more related to internal personality and team congruity issues rather than FSX's faults.
We hardcore simmers may not be the target audience, but, we are the ones that made flying on a computer what it is. Ignoring your core audience is not good business.
Dedicated payware and freeware developers have driven FS advances, and by locking them out, the variety of enhancements being offered will be minimal at best.
It took 2 years to create what little they have to offer so far. How long will it take the new target audience to get sick of waiting for the next tidbit. Attention span?
Once the new audience finds out that there are tons of freeware and payware available for the old sims, they'll abandon Flight, pick up a used or NOS copy of FS9 or FSX, and never look back. 15 new files in the library here today. Ain't no days MS can accomplish that.
I can hear it now. Gee, my buddy has FSX and he has his own personalized hanger. Got it free too. Go ask in their scenery forum for that customised local airport.
There was nothing stopping MS from becoming a sought after developer for enhancements to their own franchise. Now they want it all to themselves.
Good Luck with that......Don