> A free service putting itself out of business...

Are you suggesting a free service can't make enough money to operate a business? Man, how am I getting away with not paying for that Wikipedia subscription.

Adblock operates on donations and if it were to eliminate advertising, its current product would become useless.

I believe they meant that the ad companies are promoting a product that blocks the same ads they sell. If the promotion is successful, the ad company gets a short term win ($$) but a long term loss in ad views.