But Doom hasn't disappeared into obscurity at all.

it was sarcasm through counter example.

the parent comment mentioned:

> Yup, they're sitting on millions of hours of work because of some nefarious business logic. Probably they determined that making old games available would negatively impact the sales of their new products, at least enough to be a problem. Whatever the reason, a shame.

so he replied with "yeah, id software did that and people forgot about doom" exactly because that gave new life to the old game and the franchise probably has better health today due to the community involvement. (not a great analogy, but has a point)