Coming from over 30 years background in film and entertainment law, means I’m well versed in copyright, patent and trademark law, it’s been a daily part of my work over decades.
When it comes to this issue there’s also the aspect of derivative work. Copyright involves the direct copying of an item, in other words an atom for atom reproduction if you will.
Say a developer makes a crate 1x1x1m in 3D software, they unwrap and texture it using industry standard techniques, someone else is completely free to develop their own 1x1x1m crate utilizing the same techniques. It’s not a violation of copyright, as it does not involve touching that author’s work. Legally it would fall under an artistic license and in the USA free speech laws have also been used as a defense (which is a little bit of overuse of free speech laws IMHO).
Now here’s where we need to define the difference between ethics and law. By law you are allowed to create a derivative work based off another work as long as it is substantially different. Playing devils advocate here for a moment. Say someone came along and ripped the crate model and texture, decompiled it and moved the vertexes and faces around, created their own texture (not using any bits from the original, or even if they did, the changed colors and made significant changes to the texture) it would, under law, be considered a derivative work. Companies understand this and don’t go after such cases as they know they don’t have a legal leg to stand on in derivative works.
I well remember numerous conversations with Digital Globe and other satellite and aerial imagery companies and each stated very clearly as long as you obtained imagery from them legally (usually involving purchase of data) and had the rights to use that data, users absolutely had the right to create derivative works for commercial and/or private use and they had no interest in what people did once they sold the data to them. The only time it’s not okay is if it is specifically stated in a contract that derivative works are not allowed (royalty free film, video, photo and graphics sites outline these very clearly, what is permitted and what is not). They go into detail about derivative works etc.
Getting back to the crate model. If someone came along and ripped a 3D model and used that as a guide to build their own model, and changing over a certain percentage of it or even creating something new and dumping the source reference data, it would under law fall into the derivative work category, legal yes, ethical, not necessarily. Being ethical is more important than being lawful. I have found in life, by study and experience, that walking in integrity matters and brings rewards. I have also seen that those who don’t walk in integrity, don’t reap rewards, but rather suffer harm and it ends up costing them more in the end. The old adage sums it up, you reap what you sow.
So getting back to the OP, I fully believe the original post author created his own airport, I would happily look at both datasets and compare and go talk with Miguel B about the issue to try and straighten it out. But even if the OP or anyone took an original design and reworked it significantly, it is by law classified as a derivative work, copyright infringement cannot be claimed, ideas can’t be copyrighted, concepts can’t be copyrighted. Techniques can be protected, but they fall under patent law. Trademarks can be protected but they fall under trademark law. Copyright law specifically is for copying things, without changing anything, be it video, lyrics, a riff, a line of text etc. Yet at the end of the day what is legal may not be ethical and people will know.
So if these Lebanese guys claim copyright, the onus is on them to prove a significant number of vertexes align perfectly with their models or the textures are copied (and it’s not a case of using the same publicly available data or images such as a logo etc), they’d need to prove they were first to build, and it would have to be proven beyond any reasonable doubt that it was copied. My mind goes back to patent lawsuits between Apple and Samsung when the smartphone revolution happened. Both sides filed against each other on various patents. If memory serves me correctly, a lot of cases were dismissed and those that weren’t spent years in litigation.
Unfortunately in the FS world (and life) there are bad apples who think they can control and manipulate others, they have no integrity and will copy your work and claim it as their own. I’ve witnessed flight sim companies stealing ideas and even down to copying business operations, tools, intellectual property etc, it happened to me. I couldn’t do anything about it but just get mad, feel injustice and figure out how not to trust people and learn to do it bigger, better and faster than the unscrupulous ones and stay out in front 10 steps ahead and be better than them.
Ultimately, we know in our hearts the difference between right and wrong, our conscience tells us in our innermost being what is right and what is wrong. We need to listen to that inner voice and walk in integrity, to be beyond reproach. Integrity means doing the right thing at all times, even when we think no one is watching.
At the end of the day it stinks for the original poster and I’m hoping Miguel will work with the OP and see his innocence. Unfortunately there are avenues also at play on an international level that I can’t and won’t get into.