IMO just seems like a disaster to have lifetime subs, it just doesn't work, especially for this company. Remember they have to keep on pushing content, maintenance of servers, paying staff, etc. x~x Do people think money come out of no where?
It's really not possible for it to be a "disaster," because the number of people that are likely candidates to buy them is not very high. Please don't exaggerate.

MMORPGs make massive amounts of money provided they don't fall flat on their behinds, so a few people getting a good deal on subs doesn't really hurt them at all.