I won't badger this subject to death. But I am just speaking from a pure optics/public relations standpoint. For a lot of people, a dev creating a problem by limiting gameplay and then providing an expensive solution looks very greedy, which is a very independent consideration from the utility of cheating or not, etc.
Some people otherwise interested in the game - and that wouldn't even cheat themselves - will see that and get turned off because they will think the dev is deliberately gimping the "normal" gameplay to chase money. You see this tactic in real games where say experience is gimped somehow, but you can buy extra experience to get a "better" playthrough. Or you pay for a special character/scene, etc. I'm just giving my perspective because I would like this game to do well, and I think it shrinks the potential audience by quite a lot frankly doing that tactic. (just having anti-cheat on its own I think is not the same problem, it's the paid solution)