True, but that's impossible with digital copies. PC gamers (me included) kvetched about this for a while after the switch to digital distribution started many years ago, but we long ago not only stopped complaining but actively embraced the system. If you asked PC gamers whether they'd prefer to keep the current system or return to the old disc-based economy, with its freedom to trade games, I would guess that the vast majority of gamers would prefer to stay where we are now. For most of us, the convenience (and lower prices) outweigh the loss of that ability. I think console gamers will follow the exact same trend in sentiment regarding this issue.
There's also a reality that these kinds of restrictions are designed to help the developers and publishers themselves and to fight piracy. I know plenty of game developers. They get paid peanuts and their jobs are constantly at risk due to being in a heavily volatile industry. If the consumer has to take a few knocks here and there to give a less-brutal existence to the very people who create the games we love to play, I think that's a fair trade-off.
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