Windows can, so why can’t OS X?
Is there a simple keyboard shortcut to open a new Finder window? I dimly remember from my Windows 7 days that I could press the Windows key and E to open Windows Explorer. Shane Collins
If Finder is already the foreground application, you can press ç+n to open a new window, but I guess you are looking for a way to do this even when you have another application active. OS X doesn’t have an equivalent to pressing the Windows key and e in Microsoft’s OS, but you can hold ç and press † to cycle through applications to Finder quite quickly. If you want to do it in a single keystroke, you can use Automator.
Create a Service document, set it to receive no input and to work in any application. Add the Launch Application action. Finder isn’t in its drop-down list of apps, so browse to System/Library/Core Services in a Finder window and drag it onto the drop-down.
Finder can’t launch if it already has a window open. To handle that, add the Get Specified Finder Items action. Set it to the folder to open, then add the Reveal Finder Items action. Save this service and give it a shortcut in Keyboard preferences.
Alternatively, Keyboard Maestro (about £28 from keyboardmaestro.com), enables you to set a global Finder shortcut, along with providing many other features.