[mseebach]

In practice, the $50k customer will typically be getting something tangible that the $20k customer isn't. Perhaps they have a custom feature developed, perhaps they have special on-call/on-site support, perhaps they pay a much discounted unit-price, say $10/user (but for 5000 light users) where the other customer is paying $200/user for 100 heavy users.

If you're selling the exact same product ("exact" in the business-sense that includes stuff like support or long-term price commitments, not in the geek-sense where CentOS is the exact same as RedHat) for two vastly different price points, you should probably make sure those customers don't meet.