Hi.
Long story short : Someone can build whatever model for whatever sim if those main conditions are met :
1) The modeler has the extensive material to translate a real thing into a virtual thing. By extensive, a thousand of photos on his hard drive and wikipedia infos
are not enough : where are the extensive engineering plans with cutouts ? Today standards as per modeling quality is quite high when you look at what MSFS can offer. That also means more attention and dedication on the modeler to try to meet that standard.
2) Where is/are the modeler benefit ? Can you pay him/her ? Or is that model among the top 10 he/she loves most ?
3) The modeler has the tools to compile the model. Let's say you want it for MSFS, but the modeler doesn't have that sim, he/she just can't compile the sources, or you want it for P3D, but the modeler has moved on and only has MSFS installed...
4) The modeler has the knowledge and tools to take care of the other 70% of the work apart making the 3D model, which are making a virtual cockpit with working gauges (interior option), the flight model (FDE), the textures and paintkit (Photoshop and hundreds of hours of drawings ?), and troubleshooting and beta testing... Or is respected by the community of contributors enough to get help.
5) Modeling takes time, and there is no real life responsibilities that comes after modeling. That means, one of the main reason why a work in progress model is never finalized and released is the amount of people asking "when ?", then again "when ?", then again "when ?"... You can reduce the pressure on a modeler's workload by either be patient even if it takes dozens of years, or doubling the amount you pay him/her every time you want to ask "when"...
If those conditions are not met, that means you either wait, or do the job yourself.
Hope this short list explains a lot

Good luck.