I really think this old attitude to copy protection is short sighted and why free games are now the top revenue earners on every platform.

If a player is enjoying your game, great! The hardest part of the battle is already won, you made a great game and got it in front of the customers. Now you just need to get them to spend some money.

Sure, back in these days is was probably harder to just ask a user for a credit card number, but punishing people that enjoy your game is crazy.