tpex,
If I buy the game, the contents of the disk is now my property. If I sell it to you, I forfeit my right to using that disk. So in the dev's mind, only one person is allowed to play that game at any given time.
If we're not allowed to sell our games, then we shouldn't be allowed to lend it to friends for a weekend either.
The motor car industry is a good example. You buy your car, then sell it to your friend. He is now using the manufacturer's product without paying them. However, you're out of a car now and will most likely buy another new car (read game title).
Pirating means copying the product without paying for it. That way more than 1 person plays it at any given time. If you buy the game, you are paying to be able to play it 24/7 for the rest of your life. Lending it to your friend means you are cutting into your own allowed play-time. Selling it means you no longer have the right to play it.
If you buy the title and sell it to your friend, you're not making money and the money that was spent to print that disk and package it and distribute it ALONG WITH ITS PROFIT has been recovered by the company through its original sale.
Now, I agree with you - the company only makes 1 sale, while 2 people plays it, but person B would not buy the game anyway, so they cannot bank on "potential profit". They should be thanking people for buying 2nd hand instead of pirating, because it's the trade of legitimate wares.
Say the software devs were house builders. You ask them to build you a house. 5 years later you don't want to live in the house anymore. Do you just leave your house to rot or do you sell it?
If you sell it, you are infringing on the builder's potential to make profit by building a house for whoever bought yours. That sounds very unfair to the poor builder, doesn't it? Renting out your house is even worse. How can you now possibly want to make money off someone else's product? You terrible person.
However, if you sell, you now have money to get another house built by the builder. So he makes a profit twice on the same person instead of once on two people. This motivates him to build different and more exciting houses instead of building one type and selling it to everyone only once. That's why he lets them sell his product to people who can't afford his new product and that money is used by the richer folk to buy his new flashy houses.
If you pay for it, it's YOUR property. If you sell it, you lose all rights associated with it.
Please explain to me where that analogy misses the point?
Oh and if they use the excuse that you can use a house forever but you play a game only once, then it's a piss poor reflection on the replayability of their games they produce and they need to catch a wakeup.