This comment kinda annoys me. Let's say Dropbox had a 5GB plan for $10 (let's assume that's the price of their lowest plan - I'm not sure). So, people with 4GB would say "this is good value". But suppose they offer even better value and allow 100GB for the same price. Now it's perceived as bad value for the 4GB user, and they want a cheaper plan.

In fact, we had the same problem at my startup. We had a plan with 1-way parallelism, and a plan with 8-way parallelism (we do hosted continuous integration - https://circleci.com). Many of our customers said "oh, I don't need 8-way, so I don't want to pay for it". When we changed it to 4-way (for the same price as 8-way), the uptake was much higher, as they perceived it was something they'd use. Go figure.