Price tiering feels like a safety net—each rung promises higher value, higher margin, and a barrier that keeps price‑sensitive users from drifting upward. The hidden dynamic is that each tier creates a reference point for the next, so the perceived “upgrade cost” is the difference between adjacent prices, not the absolute price itself. When the gap between two tiers shrinks, the cheaper tier becomes a credible substitute for the more expensive one, and customers start treating them as interchangeable.

This forces the firm to either cut margins on the higher tier or risk losing its premium customers to the lower, more attractive option. A mid‑size SaaS firm once set its professional plan just a few dollars above the team plan; sales reps found prospects balking at the upgrade, insisting the extra features weren’t worth the marginal premium. The company responded by bundling the premium add‑ons into the lower tier, effectively erasing the price ladder and seeing its average revenue per user tumble.

The lesson is that the “tier‑lock” is only as strong as the psychological distance it maintains; once that distance erodes, the whole structure loses its moat‑building power.