No it doesn't keep out the spammers - they are only becoming legitimate (after they pay) and more aggressive in their campaign.
I am not a spammer and I take it as an insult to be called one - I don't get paid to post all day long about someone else's product. I am posting my own work - ONCE, EVERY COUPLE OF MONTHS, after much work and new content.
I am not trying to stick a banner at someone's face for as long as they are on reddit or anywhere else, I am simply posting the news of something, which I guess will be useful to some of reddit's auditory. They can buy a license, indeed, but that's completely up to them - my app has unlimited, fully functional, free evaluation.
You talk about a community - a community that not only doesn't invite content creators, but banishes them. This is not the type of community I would want to be a part of.
Now, since I wasn't direct-enough the last time I said I don't want to argue with you - I don't care what you have to say next, simply because I am sure you will not convince me in something different than what I already believe.