I do realise the problems with all this, much like real golf you need space. A big old warehouse perhaps. I just read about this Indoor Golf Arena planned for a spot in Holland which is quite a mammoth structure and looks incredible.
I’ve always thought big cities need indoor golf fun parks. Not full 18 holes or even the regular driving range but some sort of arena where you can practise your game but have some fun with the work colleagues over a long lunch or before you head home. Turn the golf concept on its head a bit. Make the holes 1 metre in diameter, provide targets which light up and set off fireworks to tell the whole centre you made a great shot. A little like the shooting gallery in Tiger Woods ’05 game if I remember rightly.