The original developer has already dropped the project completely, no update for years . Up to promise and put off nothing came. No response to contact attempts , not to mention there is a possibility of releasing the source code for the SimAcars.
Just look when the developer was last in the forum. Developer Account VAM Last Active:September 18, 2019, 08:56:15 PM
Unfortunately, some have tried in vain to make contact or to develop the project further. However, without the SimAcars source code you can not change or adjust anything in this regard. The whole system is based on the own Acars.
Again the developer has made clear that the source code will not be released.
Therefore, it is not a question of money or how big a community is, but how willing the developer is to make the project completely public including the source codes.
However, this will not happen.