https://www.flightsimulator.com/ MSFS2020 is still in beta stages and uses photogrammetry.
Expect very large file sizes.
For flight sim gamers it will be simply amazing.
Now:
I use various photoreal scenery for FSX landscape textures. Complete areas are difficult or impossible to find and often don't have autogen.
I use REX4
Home | REX Simulations | Global Leader in Flight Simulation Software for clouds and artificial runway textures.
It is an okay program and vastly improves the OEM FSX experience.
(It will probably interfere with FSDreamteam/GSX/Couatl/whatevertheycallit airports. That prog was advertised as a total fix but it's only a hub to purchase individual airports which quickly become pricey. A bit fraudulent. I also experienced numerous bugs. It was difficult to uninstall. I do not recommend GSX.)
Another program which I highly recommend is
http://www.ezdok-camera.com/
It's not only camera views.
It also recreates wing shake and the pilot and wing stress loads.
Even more so, it calculates airflow and effect on the aircraft with conditions. Even air flow over terrain with high/low pressures.
I crashed in a mountain valley after it accurately said the Cessna 172 had no power and lift at 9,000ft for stunt flying.
It's a very very big 30MB program.