In other words, my PS1 stopped working, but I have a PS2 which can play its games and read its memory cards. But imagine if current practices were applied to that model and Vincent from FF7 was a "free DLC" saved to the PS1's internal memory ... now I still paid full price to own FF7... but my access to Vincent becomes an expired rental.
This scenario goes both ways, though. What if Vincent was a character that was
cut from Final Fantasy 7 due to lack of time and resources? That's an entire character and story you would
never have seen. Or how about the two missing dungeons from Wind Waker, which Nintendo cut because they wanted to rush the game out the door to meet its release date? With DLC, though, that content doesn't have to remain on the proverbial cutting room floor. Content we otherwise wouldn't have
had now becomes available to us for a small additional cost. I'd rather have the option to pay to see that content than to see potentially worthwhile content get cut for budgetary reasons. I love Single-Player DLC that gives me
more of a game I really enjoyed.
The problem with DLC is that some companies really use it well with hours of additional content that only enhances the original experience (Bioware, Bethesda), but others abuse it with cheap unlocks and what at one time would have been cheat codes or easter eggs (Electronic Arts, Capcom). It's up to the consumer, though, to keep these companies honest on such matters, and the consumers have been negligent in that duty so far.