I would heartily disagree. When I go to buy some software, which I purchase via one-time purchase, I do not care one bit that they also offer a subscription. If the subscription is a ripoff, then those customers are effectively subsidizing my purchase. And if it's a great deal, then maybe I should consider subscribing instead of paying a lump sum. Either way, I'm not hurt by the additional payment option existing.

Are you equally upset about the fact that you can get a "subscription" to a car (ie. renting or leasing it) in addition to buying it outright?