Now come on @X-13, this is basic copyright stuff! The fact that they don't get duly compensated for each copy sold is the reason prices are stupidly high - £60 for a new game!?! People rent games or buy second hand because the prices are so high. Every game that is rented or played second hand, like piracy, is a lost sale. Once you've completed the game you're unlikely to go buy a new copy just to say thank you to the people who made it. If the devs don't get compensated appropriately they go out of business and we don't get new games.
The status quo is the first person to purchase the game is paying quiet a high price for everybody else to play the game, a little unfair. The only place I have a problem is if the Publishers are keeping prices artificially high to make profit at the expense of the developers.