You can always try moving "the line" between paid and free with A/B testing, though I admit it would be rather elaborate. You can also be sure that you're forc

You can always try moving "the line" between paid and free with A/B testing, though I admit it would be rather elaborate. You can also be sure that you're forcing them to choose by taking away the free tier altogether. I'm not sure how you'd A/B test a business model change, though. In our case we took away Free altogether and replaced it with Free Trials. We didn't A/B test this first, but we could tell it had a decent chance of working based on what our users had been telling us.