Can i export 3d model from Blender to other softwares(3d Max, Cinema 4d)

Hi

If i model anything in blender?
Example i model a chair then texture the chair.
Is it possible to sell this chair to other 3d programs with its pbr textures where others can use in different softwares

Almost every 3D software can export to several interchange formats… of course for some certain individual restrictions apply… because for example they could not “do” things which wheren’t developed when the where defined…
You also may have a look at blender.org manual import_export… you may also look up “baking textures”…