Having them buy a license would probably work. You could also have this stuff specified in your contract with your employer. Realistically, businesses will eit

Having them buy a license would probably work. You could also have this stuff specified in your contract with your employer. Realistically, businesses will either shrug and be fine with you using Adobe stuff, or they'll find someone else (who still uses Photoshop, but doesn't know or warn about this stuff). I doubt the person hiring artists knows or cares about this stuff until an actual leak takes place.